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June 2022 Weather Recap - Largely Uneventful, on the Dry Side

 June 2022

June 2022 was slightly cooler than average (-0.6 degrees), and rainfall of 2.92" was 1.62" below average.  The first half of the month was 1.4 degrees above average, the second half was 2.6 degrees below average (despite the fact that four warmest highs and lows were all in the second half of June).  This was the third June in a row in which less than three inches of rain fell, but this June had more than the previous two (2.62" in 2021, 1.76" in 2020).  More than 70% of the month's rain fell in the first nine days of the month; less than an inch fell in the last three weeks.  Other observations:

 

  • The month's hottest reading was 90° on 6/25, which came six days after the coolest reading (54°).

 

  • The warmest mean temperature came the day after the hottest high.  At 89°/74°, it was also the most above average day of the month (+7 degrees).  The low was the only low in the 70s during the month.

 

  • Father's Day had the coolest low in  June (at 54°, it was the coolest reading on Father's Day since 1958).  And with a high of 73°, it was the first Father's Day in ten years not to have a  high of 80° or warmer.  A week later, the low on the day of the Gay Pride Parade, 74°, was the warmest of the month (and tied for second warmest low on Gay Pride Sunday).

 

  • In between highs of 88° on 6/17, and 90° and 89° on 6/25 and 6/26, the seven days in between were six degrees cooler than average with a high/low of 75°/60°.

 

  • Every reading between between 71° and 90° was a high temperature in June, except for 87°.

 

Here are June recaps from the previous six years:

2021

2020

2019

2018

2017

2016

 

 

 

 


Analysis: Temperatures Most Likely to be the Coldest or Hottest of Each Month

 


Warmest  coldest

 

Looking at all of the months of every year since the reporting of weather conditions  began in Central Park in 1869, the temperature that has the distinction of occurring the most times as a month's coldest reading is 52° in June, which has occurred in 25 years (most recently in 2016), or about once every six years.  And the daily high that's most frequently been the hottest of any month is 94° in July as well as in August; it's been the hottest reading in those two months 22 times (most recently in 2017 and 2021, respectively).

 

 Chart - most freq coldest warmest temps each month

 

Looking across months, the temperature that has had the most designations as hottest reading of a month is 92°, which has had that distinction 76 times across six months.  (Second most is 94°, which has been hottest 72 times across five months.)

 

Chart - most frequent hottest reading all months combined

 

By contrast, the daily low temperature with the most designations as coolest is 57°, which has been the coolest reading 45 times across four months.  Second most is 41 times for the lows of 17° and 52°, occurring in five months and four months, respectively.

 

Chart - most frequent chilliest reading all months combined

 

Here are the greatest concentrations by month:

August - 80% of its hottest readings have been between 89°-96° (an 8-degree range)

June - 75% of its hottest readings have been between 89°-96° (an 8-degree range)

June - 75% of its coolest readings have been between 49°-55° (a 7-degree range)

May - 73% of its coolest readings have been between 40°-46° (a 7-degree range), and 50% have been between 41°-44° (just a 4-degree range) 

 

MISCELLANEOUS OBSERVATIONS

  • February and March have had the most different temperatures that have been coldest (both with 30) or warmest (both with 34), while June has had the fewest (15 and 19), with July having practically the same amount (16 and 19) .
  • The most frequent chilliest temperature in July, 60° (22 times), last happened in 1995, which is the longest current hiatus of any month for a temperature that has been coldest or warmest.  But despite this lengthy hiatus, it's still comfortably ahead of 58° and 59°, which have both happened 19 times.  Looking at warmest reading, the last time February's most frequent mildest reading occurred (58°) was in 2005.
  • For five years in a row (1989-1993), September's chilliest reading was 44°.  In five of the six years between 1946-1951 the hottest temperature in July was 94° (the outlier was 102° in 1949).  Also in July, five of the six years between 1973-78 had 58° as the coolest reading; the outlier was a low of 59° in 1974. 
  • Half of the 16 occurrences of the low of 13°, which is the most frequent coldest low temperature in December, were concentrated in the 15 years between 1886-1900.  The other eight 13° readings occurred in the course of the other 137 years.
  • Despite it being April's most frequent coldest low, there was a 31-year period between 1874-1904 when the low of 33° wasn't the coldest reading.  And the low of 42° in May (tied for the month's second most frequent low) had a hiatus of 36 years between 1893-1928.

 


May 2022 Weather Recap - Late First 80, Followed by Early First 90 & First 70

 

 Hello may

 

May 2022 was 0.8 degrees milder than average, and rainfall was somewhat above average (4.52").  The coolest reading was 45° on 5/7 and 5/8, the hottest was 93° on the last day of the month.  The last time the temperature was this hot in May was in 2000 (on 5/7); the last time it was hotter was in 1996 (96° on 5/20).   

 

The first 20 days of the month were about a degree below average, but then from May 21 onward temperatures were four above average.  For the entire month, eight days were five degrees or more warmer than average, four were five degrees or more cooler than average.  The most above average day was 5/22, with a high/low of 89°/72° (16 degrees above average); the most below average day was 5/7, with a high/low of 50°/45° (13 degrees below average).

 

The year's first reading of 80°+ occurred very late, on 5/21, the latest since 1988 and tenth latest on record; that date also had the year's first reading in the 90s, (90°),  just the fourth time that the first 80 and first 90 shared the same date.  Regarding days in the 90s, since 1960 Mays with two or more days with highs in the 90s occur about once every three years.  (Before 1960, it happened once every seven years.) 

 

The day after the first 80/90, Central Park had its first low in the 70s (72°), which was about two weeks ahead of schedule (the first 90 was about a week ahead of schedule). 

 

May's rainfall of 4.52" was 0.01" less than what fell in April.  This was the tenth time there was a 0.01" difference between consecutive months.  The previous time it occurred was in January and February 2016 when 4.41" and 4.40" was measured.  There have been five pairs of consecutive months with the same amount of precipitation (the last time it happened was in September and October 1997).

 

Finally, Memorial Day's high of 84° was the warmest reading on the holiday since 2015 (when it was 85°), while the high of 58° on Mother's Day (5/8), was the chilliest since 2018 (when it was 54°).

 

Here are recaps of the previous seven Mays:

2021

2020

2019

2018

2017

2016

2015

 

 

 


Months With Warmest & Coldest Readings Just A Few Days Apart

 


In close proximity

 

For the purposes of this analysis, I've gathered together months that had their coldest and warmest temperature one or two days apart.  On average, this has happened about once every two-and-a-half years.  The difference between the coldest and warmest reading has been, on average, 42 degrees (ranging between swings of 29 and 61 degrees).  I've limited the months in this analysis to those with "solo" occurrences, i.e., months in which the hottest and coldest temperature occurred on just one date.  Through March 2022, there were 58 months that met this criterion.  The last time it happened was in Nov. 2009, when the month's coldest temperature occurred on 11/7 (35°), and mildest reading on 11/8 (69°).  Here are a few other observations:

 

  • By month, February has had the most instances (nine), while September had the fewest (one).  By season, winter has had 20 such months, spring and summer have each had 14, and fall has had 10 months.

 

  • Although the average time between occurrences has been 2-1/2 years, in 1961 it happened in consecutive months (May and June).  And there have been three instances in which this type of month was just a month apart from the other:  Oct./Dec. 1871; Dec. 1882/Feb. 1883; and Aug./Oct. 1894.  (There are no instances in which a month's temperature extremes occurred on the same day). 

 

  • We're presently in the midst of the longest hiatus, which started in December 2009.  This is in contrast to the 15-year period between 1887-1901 when there were 13 months which had their warmest and coldest readings 1-2 days apart.  (Including five consecutive years, 1891-1895.)

 

GREATEST SWINGS IN A MONTH'S WARMEST-COLDEST TEMPERATURE WHEN 2 DAYS APART

>  March 1987/ 61 degrees/ from 76° to 15°

>  March 1988/59 degrees/ from 17° to 76°

>  Dec. 1871/ 57 degrees/ from -2° to 55°

>  Feb. 1967/ 56 degrees/ from 4° to 60°

>  April 1880/ 54 degrees/ from 26° to 80° 

 

GREATEST SWINGS IN A MONTH'S WARMEST-COLDEST  TEMPERATURE WHEN 1 DAY APART

Jan. 1934/ 52 degrees/ from 58˜ to 6°

>  Jan. 1913/ 45 degrees/ from 18° to 63°

>  June 1961/43 degrees/ from 96° to 43°

>  Feb. 1947/ 43 degrees/ from 50° to 7°

 

Finally, there have been nine months in which the temperature extremes occurred on the first and last day of the month, most recently in June 2009.

Chart - temp extremes 1st and last day of month

 

 

 


 


March 2022 Weather Recap: Somewhat Mild & Dry

 

Spring begins

 

March 2022 was the 16th mildest March on record in New York.  (March 2020 and 2021 are among the 16 that were milder.)   The month was 2.5 degrees above average, with the high and low being 3.7 and 1.2 degrees above average, respectively.  This March would probably have ranked among the ten mildest if it weren't for four cold days:

 

  •             March 4 -  37°/21°, 11 degrees below average 
  •             March 13 - 35°/22°, 13 degrees below average
  •             March 28 - 33°/23°, 19 degrees below average 
  •             March 29 - 38°/24°, 15 degrees below average

      

March 28th's high was the coldest this late into the year in 40 years, since a high of 30° on April 7, 1982.  (Temperatures rebounded on the 31st, and from late morning into the wee hours of 4/1, they were in the 60s.)  And the last time a low of 23° occurred later than 3/28 was in 1995, on 4/6.

 

Chart - coldest mean temps mar 28_apr 15

 

March 7 and 18 were the mildest days of the month, with both having the same high/low of 74°/50°.  The eight-day period from March 15-22 was 12 degrees above average (high/low of 64°/46°).  This was followed five days later by a four-day stretch of unseasonably cold temperatures, from March 27-30, 13 degrees below average (41°/26°).

 

Below average precipitation, 2.39" (about two inches below average), made this NYC's 29th driest March (tied with March 1897).  Much of the rain, 1.99", fell on three days (0.56" on 3/9, 0.50" on 3/12, and 0.93" on 3/24).  Only 0.4" of snow fell (3/9), but it was the most in March in three years.  33 other Marches have had less snow.

 

There was a wind gust of 49 mph the night of 3/7, the highest gust recorded in Central Park since one of  62 mph during superstorm Sandy on Oct. 29, 2012.   

 

Finally, on 3/22 afternoon humidity drop to 11% (fourth lowest of this century).

 

Here are March recaps from previous years:

2021

2020

2019

2018

2017

2016

 

 

 

 

 

 


February 2022 Weather Recap: Minimal Snow, Wide Variation in Average High & Low


Feb 2022

 

Last winter, February had much more snow than January (26.0" vs. 2.1"), but this winter the tables were turned as February had just 2.0" compared to January's 15.3".  Although snowfall was minimal, there have been 31 other winters with even less snow in February (and two-thirds of those had less than an inch). 

 

Temperature patterns were also reversed, as February of last year was 1.7° below average and  January was 1.1° above, while this winter February was 1.4° above average and January was 3.4° below.  Feb. 2022 was the 21st mildest on record.  Five recent Februarys in 2020, 2018, 2017, 2016, and 2012, were milder.

 

Chart - mild februarys of 21st Century

 

Another very big difference between Feb. 2022 and 2021 was in its diurnal variation, i.e., the difference between the daily high and low temperature.  Last February's was just 9.5 degrees, which tied for the second smallest reported in February.  This year's however, was 16.9 degrees, which was the widest variation in February since 1990, and the third widest for any February (average variation is 12.7 degrees).  Part of the reason was that it had three days with temperature variations of 30 degrees or more; only February 1918 has had more (four). 

The difference between the average high and low of Feb. 2022 and 2021 is fascinating, as this February's average high was 6.9 degrees milder than last February, but its average low was 0.5 degrees chillier.

 

Chart - feb greatest diurnal variations

 

February's above average temperature was driven by the average high, which was 3.5 degrees above average; by contrast, the average low was 0.6 degrees below average.  Eight days had highs of 55° or milder, with four of them above 60°, including two climbing to 68° (on 2/17 and 2/23).  The first 68° was a record for the date. 

 

Looking at cold conditions, eight days had highs in the 30s or colder, and four of these days had highs of 32° or colder.  Similar to the month's warmest reading, the coldest reading (16°) was also reported on two days, 2/14 and 2/15.   (January's coldest reading also occurred on back to back days).

 

Eleven days were 10 degrees or more above or below average (seven were above, four were below).  The most above average was +23 degrees on 2/17, when the high/low was 68°/49°; the most below average day came three days before that, with a high/low that was 15 degrees below average (25°/16°).  

 

During the three weeks between Feb. 4-24, four dramatic swings in temperature occurred:

  • Feb. 4-5: From 8° above average (high/low of 57°/26°), to 11° below average (27°/19°)
  • Feb. 12-14: From 16° above average (59°/42°), to 1° below average (42°/25°), to 15° below average (25°/16°)
  • Feb. 15-17: From 13° below average (30°/16°), to 3° above average (49°/28°), to 23° above average (68°/49°)
  • Feb. 23-24: From 15° above average (68°/35°), to 6° below average (35°/29°) 

 

Finally, precipitation was very close to average, with 3.23" measured (vs. an average of 3.19").  The days with the most precipitation were Feb. 3 and Feb. 20, with 0.72" and 0.74", respectively.  The month's measurable snow fell on two days: 2/13 (1.6") and 2/25 (0.4").  Of the Februarys with two inches of snow or less, Feb. 2022 had the fourth biggest drop-off from January.

 

Chart - feb vs jan snowfall

 

Here are other February recaps:

2021

2020

2019

2018

2017

2015

 

 


Greatest New York Weather 'Hits' of 2021

 

 Rainy 2021

 

Nationwide, 2021's top weather events included Arctic cold in Texas in mid-February that shut down much of the state's power grid; searing heat at the end of June never before experienced in the Pacific Northwest; and a deadly tornado outbreak that Kentucky bore the brunt of on Dec. 10-11.  Meanwhile, New York's biggest story was the  consecutive months of unprecedented rainfall in July-August-September, which culminated in flooding downpours from the remnants of hurricane Ida on the night of Sept. 1, a deluge that was responsible for the deaths of nearly 50 residents of NYC and outlying suburbs (comparable to superstorm Sandy's death toll in Oct. 2012). 

 

The year was the eighth mildest and tenth wettest on record.   Eight of 2021's months were warmer than average, led by December (+4.7°, third mildest) and October (+4.1°, sixth mildest).  These months book-ended the most below average month of the year, November (-1.8°). 

 

Although the year's nearly 60 inches of precipitation was 10 inches above average, seven of the months had below average rainfall.  More than half of the year's precipitation (52%) was in July, August, and September.  And nearly half of the rain in those three months came from tropical systems Henri (8.19") and Ida (7.13").  Here are other highlights of 2021:

 

Chart - 10 warmest and 10 wettest years

  • A snowstorm that began Jan. 31 and continued into Feb. 2 dumped 17.4”.  Most of the accumulation, 16.8", fell in less than 24 hours (Sunday night, Jan. 31 thru late afternoon on Monday, Feb. 1).  After this snow event, an additional 10" of snow fell during the rest of the month, bring February's total to 26.0", making it the 8th snowiest February on record.
  • March had its first temperature in the 80s since 1998, occurring on 3/26 (82°).
  • In addition to the excessively wet months of July-Aug-Sept, there were also periods of very low humidity during the year.  For example, nearly half of the days in March had low humidity (below 25%); extremely low humidity was reported on April 6 (7%); and December had it lowest humidity on record on 12/17 (14%).
  • The coolest Memorial Day weekend on record (average high/low of 57°/48°) was followed by the ninth warmest June.  A high of 98° on 6/30 was NYC’s hottest reading in nine years years, and the hottest reading in June since another reading of 98° in June 1994.  But just three days later, July had its first reading in the 50s since 2009, and its coolest high temperature (66°) since 2005.
  • July, August, and September each had more than 10 inches of rain (July's amount was above 11") – not only the first time in nine years any month had that much rain, but the first time ever that three consecutive months had this much.  This was also the first year to have two rainstorms that produced seven inches+.  They were associated with downgraded hurricanes Henri and Ida , and they were less than two weeks apart (Aug. 21-23 and Sept. 1).
  • On the night of  9/1, Ida's rain poured down in just five hours time (and 3.13" in one hour).  More rain fell between 9-10 PM than fell in all of November and December.

As an aside, this one-hour amount was trumpeted by the National Weather Service as being Central Park's greatest one-hour amount on record - but this claim was in error, as NWS's own records show a greater 60-minute amount on Sept. 5, 1913, when 3.31" of rain was measured between midnight and 1 AM - 0.18" more than Ida's 60-minute gully washer.  (11 days earlier, a one-hour amount of 1.94" during Henri also had the NWS claiming it was an all-time record, which was even more in error, as there have been at least a dozen instances of greater amounts in an hour, most recently in July 2018.)

  • October had a record streak of lows in the 60s - thirteen days in a row.  It also set a record (for any month) of days with high/lows stuck in the 60s.  There were six such days, concentrated in the nine-day period between Oct. 3-11.  Finally, October's coolest reading of 47° was the mildest reading to have this distinction.
  • The final week of October was the rainiest on record (4.71" fell).  That week accounted for more than half of the precipitation measured from October thru December.  This rainy week was followed by the driest November-December on record.  These two dry months prevented the year from reaching the sixty-inch mark in precipitation, coming in at 59.73".  After 31.44" fell in July-September (32.09", if rain on 6/30 is included), 12 of the 13 weeks in October-December had less than 1/10 of that amount (3.06").

 

Here are recaps of previous years:

2020

2019

2018

2017

2016

2015

2014

2013

2021


January 2022 Weather Recap - Coldest in 7 Years, Snowiest in 6

 


Winter cold and snow

 

After a December that was the third mildest on record, the first two days of January 2022 saw a continuation of these mild conditions, with highs of 56° and 59°.  Then the jet stream shifted, winter-like conditions arrived, and the month became the coldest January since 2015.  At 3.4 degrees colder than average, it was the most below average of any month in more than two years, since November 2019 (which was 4.1 degrees below average).  Subtracting the first two days of the month, which were 16 degrees milder than average, the rest of January was 4.5 degrees below average. 

 

Besides cold temperatures, snowfall was also above average, with 15.3" measured (after just 0.2" fell in December); most of it was produced by two snowstorms, as 5.8" fell on Jan. 7, and 8.3" was measured on Jan. 28-29.  This was the snowiest January since 2016 (which is the second snowiest January), and tied for 20th snowiest January overall.  Its snowfall was greater than the combined amount of the three preceding Januarys (5.5").

 

Chart - big jan snow after little in dec
 

January was 13.5 degrees colder than December.  Only three other Januarys have had a bigger drop in  temperature from December: Jan. 2016, Jan. 1912, and Jan. 1985.  (On average, January is five or six degrees colder than December.)

 

Chart - jan vs dec temperatures

January's average low of 23.5° was 4.4 degrees colder than average, while the high was 2.4 degrees colder.  January's average high of 37.1° was 1.2 degrees colder than December's average lowThe coldest reading was 10° on 1/15 and on 1/16.  The coldest day (based on mean temperature), was on 1/15, when the high/low was 21°/10° (17 degrees colder than average).  Overall, there were 12 days that were 8 degrees or more below average; half of them were 12 or more degrees below average.  

 

Finally, 11 days had highs of 32° or colder, including the last six days of the month, the longest streak since one of 14 days during the winter of 2017-18.  This streak's average high/low was 30°/19° (nine degrees below average).

 

Here are previous January recaps since 2014 (there was no recap published for Jan. 2016).

2021

2020

2019

2018

2017

2015

2014

 

 

 

 


December 2021 Weather Recap: Mild & Dry

 December 2021 recap

 
December 2021 was the third mildest on record (behind 2015 and 2001, and 0.1 degree ahead of 1984), and tied for fourteenth driest.  At 4.7 degrees above average, it was the most above average month of 2021 (passing October, which was 4.1 above average).  Although it ranked third for mean temperature (average of high/low), the month had the second mildest average low, and was tied for seventh mildest average high.

 

Seven days had mean temperatures that were 10+ degrees above average, and eight days had highs of 55° or milder (half of these days were in the 60s).  The mildest reading was 66° on 12/11, which was a record for the date.  Two extended periods of mild temperatures were largely responsible for the month being so mild, as Dec. 11-18 was 11 degrees above average (high/low of 56°/44°), and the last week of December was 8 degrees milder than average (48°/40°).  This was just the seventh December to have no temperatures of 32° or colder in the last seven days of the month. 

 

Six days had lows of 32° or colder (average number for December is 14), with the coldest reading being 25° on 12/20.  Only three other Decembers have had a milder reading as their coldest reading:  2015 (34°); 2012 (28°); and 1974 (26°).  And Dec. 1984's coldest reading was also 25°.  (On average, the coldest reading in December is in the upper teens; before 1970 it was in the low teens). 

 

Like November, December was quite dry, with just 1.39" of precipitation  measured.  Combined, these two months became Central Park's driest Nov.-Dec. on record.  Ironically, this dry combo occurred in one of the ten wettest years on record.  By contrast, the nine driest November-Decembers behind 2021 had about twenty inches less annual precipitation than 2021.

 

Chart - Driest NovDec 

With the exception of the last week in October, which had 4.71" of rainfall (the wettest last week of October on record), the other 12 weeks between Oct. 1 and Dec. 31 had only 3.06". 

 

December had just 0.2" of snow, which occurred in the pre-dawn hours of 12/24.  However, meager snowfall in December isn't uncommon, as smaller amounts (or none at all) have occurred in five Decembers  since 2001, and nine since 1994 (once every three years).

 

Unusually low humidity was reported on two dates - 20% on 12/14, and 14% on 12/17 (both in the afternoon).  Going back to the early 1940s, 14% is the lowest humidity ever reported in December (the previous low was 16% on Dec. 8, 1981).  Humidity levels below 25% are very rare in December (most instances of low humidity occur in March and April).

 

Finally, the month, and year, ended on a mild note as the temperature at the stroke of midnight was 51° (after a high of 55°).  This was the mildest reading during the ball drop at Times Square since 2004 (and the fifth mildest ball-drop reading on record).

 

Chart - 10 Mildest Decembers 

Other December recaps:

2020

2019

2018

2017

2016

2015

 

 Windowsill xmas


November 2021 Weather Recap: Dry & Chilly

 Nov 2021 calendar

With just 1.12" of rain, November 2021 was the driest November since 1976 (the driest November on record).  The month was also 1.8 degrees chillier than average, making it the most below average month of the year (February and July were  1.7  and 1.5 degrees below average, respectively).  This November was significantly chillier than last November (the mildest on record), as it was 6.8 degrees colder - the biggest temperature drop from the previous November since Nov. 2012.  Only eight other Novembers have had a bigger drop in average temperature compared to the November immediately preceding it.

 

Chart - nov v nov

 

Despite its big difference from last November, Nov. 2021 was far from the ranks of the coldest, as it tied for 80th chilliest.  (Fun Fact: Every November between 1869-1894 was colder than Nov. 2021.)  Still, it had 14 days that were five or more degrees below average.

The month's warmest reading was 69° on 11/18, followed six days later by the coldest reading (30°).  Although this was the latest date for a temperature this mild in six years, it was the first time since 2014 that the warmest November reading failed to be in the 70s.  Of note is that this warmest reading didn't occur during the 6-day period Nov. 8-13, which was six degrees milder than average.

In October, the first low in the 40s wasn't until 10/18, which was the second latest date on record.  In November, however, the fall's first reading of 32° or colder (32° on 11/23) was close to the average date of this occurrence. 

Most of the month's 1.12" of rain fell during two rain events on consecutive days:  0.48" on 11/12, and 0.33" on 11/13.  On the 13th, an uncharacteristic precipitation type for November, hail, fell for a few minutes during a quick-moving thunderstorm.  Another type of frozen precipitation, snow flurries, was reported on the last three days of the month  - but there was no accumulation in Central Park (Newark Airport reported 0.1" on the 28th).

Here are recaps of previous Novembers:

2020

2019

2018

2017

2016

2015