A Look Back at New York City Weather: April 8
Looking Back at New York Weather: April 10

Glancing Back at New York Weather: April 9



April 9 has reported an inch  or more of snow in Central Park in five years - the most times of any date in April.  The last time it happened was in 2000.



One of April's biggest snowstorms dumped 6.5" (0.1" of it fell late last night).  This brought the winter's total snowfall to 50.7" for the second year in a row.  Snow fell on this date last year as well (1.5").


A coastal storm lashed the area during the afternoon with rain and gale force winds (0.68" of rain was measured).  The high temperature was only 41°, seventeen degrees below average.  This nasty day happened to be the first day of my first job out of college, in the media department at ad agency Scali McCabe Sloves (Third Ave./E. 50th St.).  




3.42" of rain fell, with nearly two inches falling in a three-hour span between 5-8 PM.  It was an especially inopportune time for so much rain as it happened in the midst of New York's 11-day subway strike (April 1-11), which forced many commuters, like myself, to walk to and from work.


It was a delightful day for the Yankees home opener as the afternoon high topped out at 75°, seventeen degrees above average.   


It was hard to believe that the Yankees' home opener wasn't postponed, as the temperature was in the mid-30s and wet snow fell throughout the game.  (This was a week after their season opener in Cleveland was snowed out.)   Since the air temperature remained above freezing, very little of the snow accumulated (0.3" was measured in Central Park).  Happily, the Yankees beat KC, 7-3.




A nor'easter moved in during mid-afternoon, delivering 1.86" of rain (and 2.15" in total, when counting rain that continued into the wee hours of the following day).  A peak wind gust of 51 mph was clocked in Central Park.  Today's rainfall topped one of 1.78" on 4/1.


A steady light rain fell between noon-6 PM, resulting in the Yankees' home opener being called after 7 innings, with the Yankees leading, 12-3.  Not only was it rainy, but cold, as the temperature fell all day.  By game time it was down into the mid-40s - quite a change from yesterday's 80-degree weather.


One day after the high temperature reached 71°, 1.2" of snow fell during the morning - the final snowfall of winter.  The day's low of 30° was the coldest reading of the month.




A passing cold front produced a 30-minute downpour in which 0.43" of rain fell between 6:45-7:15 PM.  Earlier in the afternoon, the temperature topped out at 78°, the first reading in the 70s this year, and the warmest temperature since Oct. 3.  By contrast, yesterday's high had been just 45°.




For the ninth year in a row precipitation fell on this date, a cold rain that amounted to 0.30".  The high/low of 39°/35° was thirteen degrees below average.  This was the third day in a row with a high only in the 30s, the most in April since 1881, when there were five (all in a row as well) .


The Mets home opener was played under sunny skies, but temperatures were chilly, as the high of 49° was nine degrees below average.  The morning low of 32° was the the last time the temperature dropped to freezing in the month of April (until 2014). 


The day after the year's first reading in the 70s (73°), the first reading in the 80s occurred (82°).  This was about two weeks earlier than average for this temperature level (while the first 70-degree reading was about two weeks later than average).  The day had a desert-like feel to it as the humidity in the afternoon was below 20% late in the afternoon.





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Ken K. in NJ

Hi Rob. Do you have any information on low humidity records? I seem to recall a 10 or 12 percent humidity reading several years ago, but I don't think I've ever seen any records. It would be interesting to know the record low humidity by month, for example.


Hi Ken, information about humidity is available but it's inconsistent. It can be found in the monthly Local Climatological Recap where it's shown in 3-hour intervals; additionally, there are monthly averages by hour. But then, annoyingly, there are gaps in years in which none of this information is shown. Interestingly, in the years before 1950 hourly humidity is reported as well as an overall monthly mean. (For some reasons these old reports have a lot more granular information, which seems peculiar since you'd think we'd have the means for so much more in the present.)

Thanks for your question!

Ken K. in NJ

Hi Rob, I see I posed a question already on this date, last year. I have another one if you don't mind. I remember that snowfall in 2000 a day after the 71 degree reading. We had about 3 inches here in NJ. Is there any way to determine if that was some sort of record, i.e 70+ degree reading followed the next day by measurable snow? I was actually wondering about that when it happened.

Thanks for the blog, as always.


Hi Ken, another weather pal of mine compiled a chart on that very subject, and you're right, that is the warmest temperature to be followed the next day by a snowfall of an inch or more. However, perhaps as impressive or even more so was a 5.5" snowfall ten years ago, on March 16, that followed a high of 67 the day before. And, of course, this past winter we had 9.4" of snow on 2/9 the day after a high of 62.

Ken K. in NJ

Thanks Rob. As I said, I actually recall wondering about this back then and discussing it via Email with a friend who's also a weather buff but based in Seattle. After 16 years I now know the answer. Thanks again!

Ken K. in NJ

Edit: Obviously that should be 17 years, it's 2017 now. Time flies...

Benny R.

This was the third day in a row with a high in the 30s, the most days with highs in the 30s in April since 1881 and the most days in a row since that exact year which had five days in a row with highs in the 30s, both the most consecutive days with highs in the 30s in April and also the most days in April with highs in the 30s.

John T.

Obviously, in two consecutive years, 1999 and 2000, the temperature sharply dropped between 4/8 and 4/9. In 2010, there was a similar phenomenon, as 4/8/2010 had temperatures in the high 80's, whereas 4/9 was a MUCH cooler day (It was a dreary Friday with light showers falling on and off.)


The hot day actually occurred two days before the cool down (92 on 4/7, the earliest 90 on record). 4/8 was still unseasonably warm but it cooled to 80. And even though 4/9 had a high of 68/44 this was five degrees above average.

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