


Climatological Report (Daily)
Issued by NWS Upton, NY
Issued by NWS Upton, NY
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757 CDUS41 KOKX 020621 CLIISP CLIMATE REPORT NATIONAL WEATHER SERVICE NEW YORK, NY 221 AM EDT TUE SEP 02 2025 ................................... ...THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 1 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 77 338 PM 93 2010 79 -2 79 MINIMUM 57 215 AM 49 1991 64 -7 72 AVERAGE 67 71 -4 76 PRECIPITATION (IN) YESTERDAY 0.00 1.53 2021 0.12 -0.12 0.03 MONTH TO DATE 0.00 0.12 -0.12 0.03 SINCE SEP 1 0.00 0.12 -0.12 0.03 SINCE JAN 1 23.78 30.42 -6.64 38.90 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 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE SEP 1 0 0 0 0 SINCE JUL 1 0 3 -3 1 COOLING YESTERDAY 2 6 -4 11 MONTH TO DATE 2 6 -4 11 SINCE SEP 1 2 6 -4 11 SINCE JAN 1 930 770 160 932 ................................................................... WIND (MPH) HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NE (40) HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NE (60) AVERAGE WIND SPEED 5.6 SKY COVER AVERAGE SKY COVER 0.6 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 87 600 AM LOWEST 45 400 PM AVERAGE 66 .......................................................... THE ISLIP NY CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 79 92 1973 MINIMUM TEMPERATURE (F) 63 47 1992 SUNRISE AND SUNSET SEPTEMBER 2 2025.....SUNRISE 621 AM EDT SUNSET 723 PM EDT SEPTEMBER 3 2025.....SUNRISE 622 AM EDT SUNSET 721 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$