311
CXUS51 KOKX 021642
CLSISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
1142 AM EST TUE DEC 02 2025

...................................

...THE ISLIP NY CLIMATE SUMMARY FOR THE SEASON, FROM
9/1/2025 TO 11/30/2025...

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
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             94   09/03/1973
 LOW              11   11/24/1989
HIGHEST           85   09/19         MM      MM
                       09/26
LOWEST            29   11/23         MM      MM
                       11/29
AVG. MAXIMUM    66.6               64.2     2.4
AVG. MINIMUM    49.6               47.9     1.7
MEAN            58.1               56.1     2.0
DAYS MAX >= 90     0                0.2    -0.2
DAYS MAX <= 32     0                0.2    -0.2
DAYS MIN <= 32     8               10.1    -2.1
DAYS MIN <= 0      0                0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       19.26   2018
 MINIMUM        3.31   1965
TOTALS          9.36              10.98   -1.62     3.70
DAILY AVG.      0.10               0.12   -0.02
DAYS >= .01       27               27.4    -0.4
DAYS >= .10       17               17.1    -0.1
DAYS >= .50        6                7.8    -1.8
DAYS >= 1.00       2                3.0    -1.0
GREATEST
 24 HR. TOTAL   2.64
 STORM TOTAL    2.60
 (MM/DD(HH))

SNOWFALL (INCHES)
RECORDS
 TOTAL           7.6   1989
 24 HR TOTAL     7.6   11/23/1989 TO 11/23/1989
TOTALS             T                0.5    -0.5
 LIQUID EQUIV      T               0.00    0.00
SINCE 7/1          T                0.5    -0.5
 LIQUID 7/1        M
DAYS >= TRACE      1                0.3     0.7
DAYS >= 1.0        0                0.2    -0.2
GREATEST
 SNOW DEPTH        0
 24 HR TOTAL       T   11/11 TO 11/11
 STORM TOTAL      MM
 (MM/DD(HH))

DEGREE DAYS
HEATING TOTAL    789                936    -147
 SINCE 7/1       789                939    -150
COOLING TOTAL    176                121      55
 SINCE 1/1      1104                885     219
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              9.2
HIGHEST WIND SPEED/DIRECTION    38/280    DATE  11/11
HIGHEST GUST SPEED/DIRECTION    58/280    DATE  11/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.54
NUMBER OF DAYS FAIR           25
NUMBER OF DAYS PC             47
NUMBER OF DAYS CLOUDY         19

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                7     RAIN                      16
LIGHT RAIN               33     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                1     SLEET                      0
FOG                      26     FOG W/VIS <= 1/4 MILE      4
HAZE                      8

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$