549
CXUS51 KOKX 021027 RRA
CLMISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
627 AM EDT MON JUN 02 2025
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR THE MONTH OF MAY 2025
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1963 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
............................................................
TEMPERATURE (F)
RECORD
HIGH 98 05/20/1996
LOW 32 05/01/2008
HIGHEST 78 05/11 MM MM 84 05/24
LOWEST 46 05/23 MM MM 42 05/13
AVG. MAXIMUM 69.1 68.3 0.8 68.8
AVG. MINIMUM 53.7 50.8 2.9 53.8
MEAN 61.4 59.5 1.9 61.3
DAYS MAX >= 90 0 0.3 -0.3 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.0 0.0 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 10.14 1989
MINIMUM 0.42 2015
TOTALS 4.67 3.28 1.39 4.67
DAILY AVG. 0.15 0.11 0.04 0.15
DAYS >= .01 15 11.6 3.4 12
DAYS >= .10 12 6.6 5.4 9
DAYS >= .50 2 2.2 -0.2 3
DAYS >= 1.00 1 0.7 0.3 2
GREATEST
24 HR. TOTAL 1.52 05/21 TO 05/22 1.37 05/15 TO 05/16
STORM TOTAL 1.46 1.35
(MM/DD(HH)) MM
SNOWFALL (INCHES)
RECORDS
TOTAL T 2020
24 HR TOTAL MM
TOTALS 0.0 0.0 0.0 0.0
LIQUID EQUIV 0.00 0.00 0.00 0.00
SINCE 7/1 11.7 31.8 -20.1 MM
LIQUID 7/1 1.17 3.10 -1.93 MM
DAYS >= TRACE 0 0.0 0.0 0
DAYS >= 1.0 0 0.0 0.0 0
GREATEST
SNOW DEPTH 0 0 MM
24 HR TOTAL MM MM
STORM TOTAL 0.0 0.0
(MM/DD(HH)) MM
DEGREE DAYS
HEATING TOTAL 113 196 -83 144
SINCE 7/1 4568 5154 -586 MM
COOLING TOTAL 12 27 -15 38
SINCE 1/1 12 29 -17 MM
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WIND (MPH)
AVERAGE WIND SPEED 9.5
HIGHEST WIND SPEED/DIRECTION 32/290 DATE 05/31
HIGHEST GUST SPEED/DIRECTION 47/290 DATE 05/31
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.70
NUMBER OF DAYS FAIR 3
NUMBER OF DAYS PC 13
NUMBER OF DAYS CLOUDY 15
AVERAGE RH (PERCENT) 73
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 4 RAIN 8
LIGHT RAIN 19 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 20 FOG W/VIS <= 1/4 MILE 7
HAZE 4
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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