Climatological Report (Daily)
Issued by NWS Upton, NY
Issued by NWS Upton, NY
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671
CDUS41 KOKX 220618
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
218 AM EDT MON SEP 22 2025
...................................
...THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 21 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 71 105 PM 84 1980 73 -2 73
MINIMUM 52 1159 PM 43 1973 57 -5 63
1991
AVERAGE 62 65 -3 68
PRECIPITATION (IN)
YESTERDAY 0.00 2.16 1966 0.13 -0.13 0.00
MONTH TO DATE 1.24 2.49 -1.25 0.06
SINCE SEP 1 1.24 2.49 -1.25 0.06
SINCE JAN 1 25.02 32.79 -7.77 38.93
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 SEP 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 3 2 1 0
MONTH TO DATE 5 20 -15 5
SINCE SEP 1 5 20 -15 5
SINCE JUL 1 5 23 -18 6
COOLING
YESTERDAY 0 2 -2 3
MONTH TO DATE 86 92 -6 71
SINCE SEP 1 86 92 -6 71
SINCE JAN 1 1014 856 158 992
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION SE (120)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 7.6
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 500 AM
LOWEST 43 1200 PM
AVERAGE 67
..........................................................
THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 91 1980
MINIMUM TEMPERATURE (F) 57 38 1997
SUNRISE AND SUNSET
SEPTEMBER 22 2025.....SUNRISE 640 AM EDT SUNSET 649 PM EDT
SEPTEMBER 23 2025.....SUNRISE 641 AM EDT SUNSET 647 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$