Climatological Report (Daily)
Issued by NWS Upton, NY
Issued by NWS Upton, NY
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746
CDUS41 KOKX 202045
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
445 PM EDT THU AUG 20 2026
...................................
...THE ISLIP NY CLIMATE SUMMARY FOR AUGUST 20 2026...
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1963 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 84 1046 AM 94 1983 81 3 70
MINIMUM 68 457 AM 53 2008 66 2 62
AVERAGE 76 73 3 66
PRECIPITATION (IN)
TODAY 0.00 2.61 2001 0.14 -0.14 0.32
MONTH TO DATE 3.35 2.82 0.53 0.47
SINCE JUN 1 11.78 10.08 1.70 7.99
SINCE JAN 1 27.04 28.88 -1.84 23.72
SNOWFALL (IN)
TODAY 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
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 10 31 -21 18
SINCE JUL 1 0 1 -1 0
COOLING
TODAY 11 8 3 1
MONTH TO DATE 241 189 52 184
SINCE JUN 1 741 653 88 853
SINCE JAN 1 796 682 114 865
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION S (160)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SE (120)
AVERAGE WIND SPEED 5.5
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 100 AM
LOWEST 55 1000 AM
AVERAGE 74
..........................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 94 1995
MINIMUM TEMPERATURE (F) 66 47 1977
SUNRISE AND SUNSET
AUGUST 20 2026........SUNRISE 608 AM EDT SUNSET 743 PM EDT
AUGUST 21 2026........SUNRISE 609 AM EDT SUNSET 742 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$