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August 2017

July 2017 Weather Recap: Somewhat "Ho-Hum"

4th of july fireworksThe month of July, temperature-wise, was close to average (+0.3 degree), with slightly below average rainfall (4.19", more than half which fell in the first week).  Thru 7/22 temperatures were 2.3 degrees above average, but the final nine days were four below average.  Five days had highs in the 90s, which was below the average of eight.  Four of these 90-degree days were consecutive, from 7/19 thru 7/22, making this the third heat wave of the year.  It was then immediately followed by five days in a row with highs in the 70s, the longest such streak in July since 2009.  7/20's high/low of 94/77 tied 6/13 as the hottest day of the year.  Finally, the month's rainfall highlight was on 7/7, when 1.78" fell, much of it pouring down during a two-hour deluge before lunchtime.  Here are a few other observations:

 

  • July 4th was the warmest in four years, but its high of 85° was two degrees cooler than Easter Sunday's.  However, it started off much warmer, with a low of 70° versus Easter's morning low of 59°.  (And it was 24 degrees warmer than Memorial Day.)
  • Although the average low for July was 1.0 degree above average, the average high was 0.4 degree below average.  This somewhat mirrored June, which had an average high that was 1.1 degree above average and a high that was right at the average.
  • July's rainfall could have been considerably more but strong thunderstorms on 7/17 and 7/21 stayed north and south of Manhattan, and a predicted nor'easter on 7/29 stayed too far south and east of the City.
  • This was the eighth July in a row with no lows in the 50s, continuing the longest such streak on record (for the month of July).
  • July 1940, 1954 and 1963 had more than twice as many 90-degree days than July 2017, but their average temperatures were slightly lower, due to their average low temperatures, which were three degrees cooler:

 

July 2017 temperatures

 

  • July Fun Fact: July 1937, 1938 and 1939 all had the same average temperature (76.6 degrees).  

 

Weather.beach.umbrella  

 

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