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Today in New York Weather History: September 27

 

1908

This was the 21st day in a row with no rain.  (The other nine days of the month had rain on three days, which amounted to 1.91".)

1975

Although it amounted to just 0.02", the rain that fell shortly before daybreak made this the ninth day in a row in which some rain fell.  (The first day of this streak also received 0.02").  In total, 8.95" of rain fell, most of it coming during four days in a row (Sept. 23-26) that each had more than an inch of rain. 

1985

Hurricane Gloria made landfall on Long Island near the Nassau/Suffolk border, and dumped heavy rain in the City during the morning (3.13", a record for the date), with most falling between 9:30 AM-12:30 PM.  Skies cleared around 1:00, and the rest of the afternoon was beautiful.  The bountiful rain helped put a dent in the year's rainfall deficit.  (To read my first-person account of the storm double click here.)

 

Hurricane_gloria

1998

Today's high of 89°/low of 69° was 15 degrees warmer than a typical day in late September.

2010

1.33" rain fell throughout the day, exceeding the total amount that fell in the previous four weeks.  One year earlier, 1.03" fell on this date.

 

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Today in New York Weather History: September 26

 

1940

Clear skies and very chilly, with a high/low of 60°/42°, which made it feel more like early November.  The morning low, 15 degrees below average, was a record for the date (which still stands).  This chilly air followed a rainstorm that swept through yesterday morning, dumping 2.36" of rain (a record for the date that also still stands).  This accounted for almost all of September's 2.82" of rainfall. 

1970

Between Sept. 22 and today, four of the days had afternoon highs in the 90s: 94°-93°-87°-90°-91° (today).  Furthermore, all five days had mean temperatures that were fifteen degrees or more warmer than average.  Yesterday and today's highs were records for the dates; today's was the latest 90-degree reading since 1941.  

1975

For the fourth day in a row, more than an inch of rain fell.  At the onset of this deluge rain fell for 47 consecutive hours.  Total rain during these four days amounted to 7.43", as 1.82" fell today; 1.05" yesterday; 2.26" on 9/24 and 2.30" on 9/23. 

 

Weather.downpour on umbrella 

1993

Beginning at 11 PM last nigh,t and continuing through 10:00 this morning 1.66" of rain fell.  It came down heaviest this morning when an inch fell between 6:45-8:45 AM.

1995

This was the seventh year in a row that rain fell on this date.  The 0.42" that fell today occurred throughout the day.

2005

Evening showers amounted to 0.17", the "rainiest" day of what turned out to be the driest September since 1884.  By contrast, September 2004 had 11.51" of rain, the wettest since 1934.

2007

Today's high was a sultry 87°, fourteen degrees warmer than average.

2008

The morning was very soggy as heavy rain amounted to 2.34", most of which fell between 3-10 AM.  This was a record rainfall for the date.

 

Morning_rainstorm

 

2018

A new September record was set as the day's low of 69° was the seventeenth this month that was 67° or warmer, breaking a tie with 1971.  (A typical September has six days with lows this mild.)

2020

This was the sixteenth day in a row with no measurable rain, one day more than June's dry streak, which had been the longest this year.  The last time there was a lengthier streak was during the fall of 2017 when there was one of eighteen days (Sept. 20-Oct. 7). 

16 days

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Today in New York Weather History: September 25

 

1926

After a high of 89° at 3 PM, the warmest reading of the month (and a record until 1970), the temperature fell steadily (especially after 8 PM) until it bottomed out at 52° by daybreak the next day.

1946

This was the third day in a row with a low of 66°, and it followed three days in a row with lows of 67°.  This compares to average lows this time of the month in the upper 50s.  (High temperatures for these six days, however, were all different.)

1975

Between Aug. 28 and today, only two days had above average mean temperatures.  This four-week period was nearly five degrees cooler than normal.  Today was seven degrees below average, with a high/low of 62°/55°.

1980

Three days after the mercury soared to a sizzling 94°, today's high temperature was a chilly 62°, eleven degrees below average.

1991

Although 1.97" of rain fell today, conditions were dry during the daylight hours.  Today's rain accounted for more than half of the month's 3.71" total.  It was also the first rain on this date in 11 years.

2010

Today, with a high/low of 89°/67°, and the previous three days, averaged 11 degrees warmer than the norm.  This was also the twelfth day this year with a high of 89°, the most on record.

 

89

2018

Close to two inches of rain fell today (1.95", to be exact), starting shortly before daybreak and continuing thru early evening.  Nearly half of it poured down in the early afternoon between 1:00 and 2:00.  Today's rain pushed September's rainfall over five inches, making it the sixth month this year with more than five inches of precipitation, joining 1998 as the only two years in which this occurred (between January thru September).

 

Raining cats and dogs
2020

For the past week a strong high pressure system was anchored over the Northeast, bringing fair skies, low humidity and the coolest temperatures of the month.  It was also responsible for keeping the remnants of two hurricanes (Sally and Beta) south of the area.


Today in New York Weather History: Yom Kippur Weather Highlights (1970 - 2020)

Yom_kippur_shofar

 

Because of the time of year Yom Kippur falls (mid-September thru mid-October) the weather is relatively undramatic, with few temperature extremes or notable storms to speak of (based on the period 1970-2020).  However, with that said, this post remembers a number of years that had memorable weather conditions on the Day of Atonement. 

 

  • 1972 (Sept. 17-18) - This was the warmest Yom Kippur of the 1970-2020 period as the high on the 17th reached 92° while the 18th saw a high of 86°.    
  • 1979 (Sept. 30 - Oct. 1) - 0.81" of rain fell on 10/1 between 1-9 PM, making this the wettest Yom Kippur in the years since 1970 (until 2005).
  • 1989 (Oct. 8-9) - This was the chilliest observance of Yom Kippur until 2000.  The high on the 8th was 59°, while the high/low on the 9th was only 55°/40°, twelve degrees below average.
  • 1991 (Sept. 17-18) - Falling on the same dates as the hottest Yom Kippur of the period, in 1972, this year's was the second warmest.  It featured the hottest temperature on the first evening of Yom Kippur, 93° (a record for 9/17), which was nineteen degrees above average.  The next day was more comfortable, but still a warmer than average 83°.
  • 2000 (Oct. 8-9) - The morning of the 9th had a low of 38°, sixteen degrees below average and the chilliest reading on Yom Kippur in the 1970-2020 period.  This reading was just one degree shy of tying the record for the date.
  • 2002 (Sept. 15-16) - It was mild and rainy during the first half of the holiday.  Although not all of the rain fell between sunsets, nearly one inch fell between 2 PM on the 15th and 10 AM on the 16th.  The high was 79° on 9/15 and 81° the following day, about five degrees above average.
  • 2005 (Oct. 12-13) - The holiday fell in the midst of a huge rainstorm.  Seven inches of rain fell on the two days, with two inches of it pouring down between sundown on the 12th and sundown on the 13th.  
  • 2014 (Oct. 3-4) - Skies were clear and temperatures seasonable the evening of 10/3, but 10/4 saw 1.18" of rain fall between 10 AM and 5 PM, making it the second rainiest Yom Kippur in the years since 1970.  However, skies cleared rapidly after 5 PM and conditions were as nice as the evening before. 
  • 2017 (Sept. 29-30) - After a streak of sixteen unseasonably warm days in a row (with a high/low of 87°/69°, nine degrees above average), today and tomorrow had seasonable temperatures (under sunny skies), i.e., highs in the upper 60s/lows in the mid-50s.
  • 2018 (Sept. 18-19) - The remnants of Hurricane Florence brought a series of heavy downpours from lunchtime thru late afternoon on the 18th (dropping a little over an inch of rain), but by sundown skies had cleared and the following day was partly cloudy, with above average temperatures (high/low of 81°/68°).
  • 2019 (Oct. 8-9) - After a dry and cool evening on the 8th, the 9th became raw, rainy and breezy after sunrise as a coastal storm brought a little more than a half inch of rain, mostly between 10 AM-2 PM.  This was the largest daily rainfall in the past seven weeks. Temperatures stayed in the 50s all day (high/low of 59°/51°, four degrees below average).
  • 2020 (Sept. 27-28) - The longest stretch of days with no measurable rain since the fall of 2017, sixteen, ended just before midnight on the 27th when a light shower produced 0.03" of rain.   Both days had temperatures that were well above average, with highs/lows of 79°/67° and 77°/69°, respectively.

 

 

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Today in New York Weather History: September 24

 

1921

This morning's (and Sept. 19th's) low of 56° was the coolest reading of the month.  (The coolest reading in September is typically in the upper 40s.)  August had a cooler reading than September (55°).  Not surprisingly, this was, at the time, the third warmest September on record (now ranked eighth).

1950

It was a day with very chilly conditions, with a high/low of only 53°/43°.  Today's high, 20 degrees below average, was more typical of the second week of November.  Unseasonably chilly days like this in autumn are often caused by nor'easters, but this particular day was dry under a mix of sun and clouds.

 

Clipart_sweater

1959

With a high of 89°, this was the third day in a row of summertime heat.  Yesterday's high was 90°, and the day before that was 89°.  The average high this time of year is in the low 70s.  Today's high was a record (which stood until 2017).

1974

This morning's low of 43° (14 degrees below average) was the earliest date for a temperature this chilly since 1963, when a low of 40° was posted on this date - the record for the date.

1979

For the third day in a row the high temperature reached 70°. 

2005

Today's high was 71°, the first time this month the temperature failed to reach 80° or higher - a record streak for September.  Up until today, the month had been seven degrees warmer than average.

 

80 

2006

Today's morning low of 67° was the mildest low temperature of the month (it also occurred on Sept. 9 and 19).  This was the coolest "maximum" low temperature for any September since 1967 (when it was also 67°). 

2013

Under clear skies, the morning low fell to 47°, eleven degrees below average and the chilliest reading in September since 2000, when a low of 43° occurred on Sept 29.

2014

The high reached 71° for the third day in a row, close to the seasonal average.

2017

Under clear skies the temperature reached 91°, the first 90-degree reading since 8/1, and the latest date for a 90-degree high since 1970, when there were highs in the 90s on 9/25 and 9/26 (however, in 2019 there would be a high of 93° on 10/2).  This was a record for the date, and the first time the temperature rose into the 90s on 9/24.  Today was also the twelfth day in a row with above average temperatures.

 

Latest 90-Degree Days

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Today in New York Weather History: September 23

 

1882

Less than two weeks after heavy rains from a tropical storm soaked the City, another tropical system brought more flooding rains and drenched New York with its greatest rainfall for any calendar date - 8.28".  And in the preceding two days 3.52" of rain fell.  With a total of 16.85" of rain for the entirety of September (most of which fell between the 11th and 23rd), this would be the wettest month on record - until August 2011 (when 18.95" was measured).

 

The rainstorm
 

1895

A four-day heat wave, the latest on record, ended today, with a high of 97°.  This is the hottest reading ever reported in the second half of September.

 

Cooling off 1900

1914

This was the last day of an out-of-season three-day heat wave that saw highs of 94°-95°-92° (23 degrees above average).  This came a week after an eight-day period of very cool weather that averaged a high/low of 68°/51°.  

1961

Today's high was 90°, the eighth day this month with a high in the 90s - the most ever in the month of September.

 

Melting ice

1970

Although the hottest temperature of the year was 94° (reached three times), today, with a high/low of 93°/77°, had the year's highest mean temperature.  At 85°, it was 20 degrees above average. 

1973

The 0.24" of rain that fell in the pre-dawn hours was the first to fall on this date in sixteen years.

1989

In less than 12 hours the temperature dropped from 81° (9 degrees above average) to 47° (11 below).  The air mass that ushered in this chilly air was responsible for steering the remnants of Hurricane Hugo away from the Mid-Atlantic states.

2005

Today's afternoon high reached a summer-like 87°, the 35th day in a row in which the temperature rose into the 80s.  During this five-week stretch temperatures averaged six degrees above the norm. 

 

Happy_sun2 

2011

Heavy rain fell mostly in the afternoon, totaling 2.62".  Since Aug. 3 more than twenty-seven inches of rain fell.  This was more than what fell during the entire drought-stricken year of 1965, when just 26.09" was measured. 

2021

Chilly air moving into air that was warm and humid (dew points were around 70°) produced periods of heavy rain that began in the evening and continued until sunrise the following day.  2.03” fell in total (1.36” of it today), with much of it, 0.86”, pouring down between 7-8 PM (and 0.51” between 3-5 AM).  The rainstorm brought the month’s total to 9.76”, making this the rainiest September since 2004 (11.51”), and the sixth wettest on record (following July and August, which were the third and fifth wettest of their respective months).

This was also the first time on record that three months in a row had more than nine inches of rain (totaling a little more than 31 inches).  With a little more than three months left to 2021, 51.69" of precipitation has been measured, which is more than what an entire year averages (a little under 50 inches).  

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Today in New York Weather History: September 22

 

1961

Today's high was 88°, the nineteenth day this year with a high of 88° or 89° - the most of any year in the 1950-2014 period (later tied in 2015; the average number is nine).  Additionally, there were 29 days in the 90s (the 29th would occur on 9/23).

1970

Today's high was 94°, one degree shy of the record.  And although this was a late date for a high in the 90s there would be three more to come: on 9/23 (93°), 9/25 (90°) and 9/26 (91°).  Today's reading was the hottest of the year, shared with three other dates in July and August.

 

Weather.summertime

1971

This morning's low of 58° was the first low in the 50s this month - the latest date on record for the first low cooler than 60° in September.  (Since then the latest date has been 9/17, which occurred in 2004.)

1976

Today, and the previous five days, had three matching pairs of high temperatures: 78° on the 17th and 18th; 81° on the 19th and 20th; and 68° today and yesterday.

1980

Today's unseasonably hot high of 94°, twenty-two degrees above average (but one degree shy of the record for the date) was the latest 90-degree reading since 1970 (when it occurred on Sept. 26).  It was also the 32nd 90-degree day of the year - the most since 1966 (which had 35).

Sizzling_sun 

1989

Powerful category 4 Hurricane Hugo made landfall near Charleston,South Carolina overnight.  The NYC metro area was prepared for 5-10 inches of rain when the storm's remnants moved up the coast, but the storm moved inland instead and stayed well to our west.  This was a great relief since six inches of rain had already fallen between Sept. 14-20.  

 

Path_of_hurricanehugo 

1992

0.55'' of rain poured down between 11 PM-midnight.  (It actually fell between midnight and 1 AM on the 23rd, but the National Weather Service uses Standard Time year-round for record-keeping and doesn't recognize Daylight Saving Time).  

2005

For the past nine days, high temperatures were between 82° and 85°, averaging 10 degrees above average.

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Today in New York Weather History: September 21

 

1888

Today was the last day of a two-week period (including a six days in a row, between Sept. 8-13) in which measurable rain fell on eleven of the days, amounting to nearly seven inches.  Three days (today was one of them) had more than an inch, another three had between 0.50"-0.99".

1906

Today's low of 75° was the 61st day this year with a low of 70° or warmer.   No other year has had more days (2010 came very close, with 60).  This number was more than double the average of 30 days.

1938

New York City was spared the full fury of the history-making hurricane known as the Long Island Express as it made landfall mid-afternoon 65 miles to the east.  Still, the City had to contend with gale force winds that gusted to 60-70 mph, and four inches of rain, half of which fell between 2-5 PM.   Besides the wind and rain it was also chilly, with the temperature dropping slowly all day, from low-60s to low-50s.  Today's deluge followed two days of steady rain that amounted to 3.45".

 

Hurricane1938

1961

Less than a week after a tropical storm brushed the City, bands of rain from Hurricane Esther moved in yesterday evening, and continued through early afternoon today.  1.28” of rain fell, with 1.05" measured today; rain fell hardest between 2-4 AM, and 10 AM-noon.  (Before it made landfall in North Carolina a few days earlier, Esther was briefly a category 5 storm.)  Tropical storm force winds lashed the City around daybreak.  The rain produced by the storm accounted for 75% of the month’s rain (1.70”).

1966

The rainfall record for this date, set in 1938, was easily eclipsed when a powerful nor'easter dumped 5.54", most of it in the 12 hours between noon and midnight.  At the time this was the third greatest daily rainfall on record (it's now ranked eighth).  What made this rainfall even more notable was the fact that it came in the sixth year of a drought.  The amount of rain that fell today was greater than any month's total since November 1963.  

1971

This morning's pre-dawn rainfall of 0.50" brought the month's total rainfall to more than seven inches, the third month in a row rainfall exceeded seven inches - the only time this has happened (later joined by July-September 2021).

1979

Of the 1.88" of rain that fell today, 0.54" poured down in the hour between 11 PM-midnight (it actually fell between midnight and 1AM on the 22nd, but the National Weather Service doesn't recognize Daylight Saving Time, using Standard Time year-round).

2011

Today's 0.06" of rain in the early evening was the same amount that fell yesterday and, like yesterday, it was the first time it rained on this date in 10 years.

2020

The morning low of 49° was the first chillier than 50° reading in September in seven years, and the earliest date for this occurrence since 1993 (when it was on 9/20).  Today's low came after lows of 50° on the previous two days.  Since 2000 the average date for the first low in the 40s has been 10/5.

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Today in New York Weather History - September 20

 

1894

All of September's 8.68" of rain fell in a 13-day period that ended today (with nearly half of it falling yesterday).

1979

The morning low was a chilly 45°, fourteen degrees below average - and one degree shy of the record. 

1983

The high reached 93°, the last 90-degree day of the year, and 36th overall - at the time, the second most on record (now ranked fifth).  Today was also the seventh 90-degree day since Sept. 5.  And the fourth record high of the month.

 

Hot_sun 

1989

2.32" of rain fell, with nearly half of it (1.05") falling in the 60 minutes between 6:37-7:37 PM.  4.21" fell in the past two days, and six inches in the past week.  Today's rainfall was a record for the date.

1993

The morning low of 44° tied the record for the date and was the chilliest reading of the month (16 degrees below average).  What made this temperature even more worthy of note was the fact that it was the fifth consecutive September in which the chilliest reading was 44° (but all on different dates).

 

44degrees    

2000

Today was the last 80-degree+ day of the year.  In total, there were 58 such days, the fewest of any year in the 1970-2021 period.  (The typical number of such days is 85.)

2005

Today was the 20th day this year with a high of 82°, which is the most times a high temperature occurred in any one year in the 1970-2020 period.  (In 1991, the low of 65° occurred nineteen times, which is the most frequent low temperature during any year.) 

2011

The 0.06" of rain that fell during late AM showers was the first rain on this date in ten years.  This was also the third day in a row with a high of 68°, six degrees cooler than average.

 

 

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Today in New York Weather History: September 19

 

1894

A rainstorm that moved in yesterday evening and continued through today, dumped more rain (5.16") than what fell all summer (the second driest on record).  The amount that fell today, 4.30", was a record for the date (that still stands).  At the time this was the third greatest daily rainfall (now ranked 17th).

1928

Remnants of the Great Okeechobee Hurricane (which killed 2,500+ in central Florida on 9/17) dampened the City with 1.70" of rain, and lashed it with winds of 25-35 mph; 1.29" fell throughout the day today (with 0.58" of it falling between 10 AM-noon), and 0.41" fell in the wee hours of the 20th (with 0.29" falling between midnight-1 AM).   

1983

Today's high was a sizzling 94°, twenty degrees above average, and a record for the date.

 

Eggfrying 

2000

1.90" of rain fell during the afternoon and evening, with much of it falling between 5-7:30 PM.

2019

Humidity of 15% or lower occurs very infrequently in New York, and when it has happened it's been in March and April (in the years since 2000) - until today, when it dropped to 15% for a few hours during the afternoon.  The last time the humidity was this low in September was on Sept. 11, 2001, when it reached 16%.

 

15%
 

 

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