Climatological Report (Daily)
Issued by NWS Upton, NY

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775
CDUS41 KOKX 310618
CLIISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
218 AM EDT SUN AUG 31 2025

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

...THE ISLIP NY CLIMATE SUMMARY FOR AUGUST 30 2025...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1963 TO 2025


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         77    305 PM  96    1973  79     -2       75
  MINIMUM         56    542 AM  45    1986  64     -8       62
  AVERAGE         67                        72     -5       69

PRECIPITATION (IN)
  YESTERDAY        0.00          0.54 1974   0.11  -0.11     0.04
  MONTH TO DATE    0.53                      4.13  -3.60     6.50
  SINCE JUN 1      8.05                     11.39  -3.34    11.49
  SINCE JAN 1     23.78                     30.19  -6.41    38.87

SNOWFALL (IN)
  YESTERDAY        0.0          MM      MM   0.0    0.0      0.0
  MONTH TO DATE    0.0                       0.0    0.0      0.0
  SINCE JUN 1      0.0                       0.0    0.0      0.0
  SINCE JUL 1      0.0                       0.0    0.0      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        1
  SINCE JUN 1     18                        31    -13        1
  SINCE JUL 1      0                         1     -1        1

 COOLING
  YESTERDAY        2                         7     -5        4
  MONTH TO DATE  242                       265    -23      276
  SINCE JUN 1    911                       729    182      872
  SINCE JAN 1    923                       758    165      914
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION     N (340)
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION     N (340)
  AVERAGE WIND SPEED     7.9


SKY COVER
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    72           500 AM
 LOWEST     31           200 PM
 AVERAGE    52

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


THE ISLIP NY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   79        94      1973
                                             2010
 MINIMUM TEMPERATURE (F)   64        45      1965


SUNRISE AND SUNSET
AUGUST 31 2025........SUNRISE   619 AM EDT   SUNSET   726 PM EDT
SEPTEMBER  1 2025.....SUNRISE   620 AM EDT   SUNSET   724 PM EDT


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




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