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July 2014 Weather Recap: Coolest Since 2009
Summer of 2014 Weather Recap - Not As Cool As it Seemed

Comparing Weather Conditions of Summer's Three Big Holidays

Previously, I've published separate posts about weather conditions over the Memorial Day and Labor Day weekends and for the 4th of July.  This post compares the three side-by-side, looking at them as single-day holidays (i.e., the Mondays of Memorial Day and Labor Day, and the 4th of July) for each year going back to 1970 (thru 2019).

 

Coney.island.crowded    

 

Because of where they fall on the calendar, you'd expect the 4th of July to be the warmest of the three holidays and Memorial Day the coolest, but that's happened in just one-third of the summers.  (On average, the high on Memorial Day is 75°, on 4th of July it's 84° and 81° on Labor Day.)  Memorial Day has actually been the warmest of the three holidays in five of the years (and tied with 4th of July in two other years) while in eleven years Labor Day was the warmest.  July 4th had the coolest temperature in six years (including 2014 and 2015).

 

YEARS IN WHICH MEMORIAL DAY WAS THE  WARMEST SUMMER HOLIDAY
         
    High Temperature
    Mem Day 4th of July Labor Day
2011   86 86 70
2009   81 79 74
2007   83 71 82
2006   88 87 75
1991   89 82 74
1985   86 86 83
1981   87 75 74
         
         
YEARS IN WHICH  4TH OF JULY WAS COOLEST SUMMER HOLIDAY
         
    Mem Day 4th of July Labor Day
2015   85 75 92
2014   86 74 88
2008   80 78 84
2007   83 71 82
1979   75 71 86
1978   79 62 80
         
     

The summer of 1999 has the distinction of having the warmest three-holiday average temperature, 10 degrees above average, while the summer of 1982 was the coolest, eight degrees below average (with 1992 close behind, at 7.5 degrees below average).

 

WARMEST 3-HOLIDAY AVERAGE TEMPERATURE
       
Summer of 1999      
  High Low Mean
Memorial Day 89 68 78.5
4th of July 96 79 87.5
Labor Day 83 74 78.5
Average 89 74 81.5
       
COOLEST 3-HOLIDAY AVERAGE TEMPERATURE
       
Summer of 1982      
  High Low Mean
Memorial Day 55 50 52.5
4th of July 77 60 68.5
Labor Day 82 60 71
Average 71 57 64
       

 

The holidays during three summers - 1972, 1986 and 2016, had nearly the same high temperatures.  In 1972 the high was 78° on Memorial Day, 79° on 4th of July and 77° on Labor Day, while in 1986 the highs were similar to 1972's, but in a different order (76-77-78).  And 2016's were all in the 80s, with a high of 82° on Memorial Day and 84° on both July 4 and Labor Day.  On the flip side, the greatest variations in high temperatures occurred in the summers of 1974 (55-95-73) and 2003 (56-92-69).

 

In the years covered by this analysis there has never been a summer in which all three holidays had highs in the 90s.  In fact, there has been only one year, 1983, in which two of the three holidays had 90-degree readings (95° on 4th of July, 91° on Labor Day).  Looking at cool temperatures, three summers saw all three holidays fail to reach 80° (1972, 1986 and 2001).

 

Eleven summers (i.e., one out of four) were rain-free across all three holidays.  The last time this happened was in 2010.  Conversely, just two years saw rain on each holiday, in 1979 and 1998.  However, in those years the three days weren't washouts nor was rain significant for each holiday.

 

Labor day weekend
  

 

 

 

 

 

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Comments

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Mark Chelchowski

I believe in 2007 Columbus Day was warmer than all three summer holidays. Wasn't there a period of time when there was a string of several warm Columbus Day's in a row?

Rob

Hi Mark, that's a great observation. Yes, the Monday-holiday Columbus Day that year (10/8) was very warm, with a high/low of 87/67 (18 degrees above average). And that high was a record for the date. FYI, the high/low on the original Columbus Day, 10/11, was 67/59. Thanks for bringing this to my attention.

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