Climatological Report (Daily)
Issued by NWS Upton, NY

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755
CDUS41 KOKX 172044
CLIISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
444 PM EDT MON AUG 17 2026

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

...THE ISLIP NY CLIMATE SUMMARY FOR AUGUST 17 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         78   1224 PM  91    1997  82     -4       86
  MINIMUM         68    231 AM  54    1979  66      2       74
  AVERAGE         73                        74     -1       80

PRECIPITATION (IN)
  TODAY            0.66          1.27 1992   0.13   0.53     0.00
  MONTH TO DATE    3.35                      2.40   0.95     0.15
  SINCE JUN 1     11.78                      9.66   2.12     7.67
  SINCE JAN 1     27.04                     28.46  -1.42    23.40

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            8                         9     -1       15
  MONTH TO DATE  206                       163     43      176
  SINCE JUN 1    706                       627     79      845
  SINCE JAN 1    761                       656    105      857
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION    NE (30)
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION    SE (140)
  AVERAGE WIND SPEED    11.5


SKY COVER
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
  HEAVY RAIN
  RAIN
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97           700 AM
 LOWEST     87           400 AM
 AVERAGE    92

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


THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   81        92      2002
 MINIMUM TEMPERATURE (F)   66        52      1979


SUNRISE AND SUNSET
AUGUST 17 2026........SUNRISE   605 AM EDT   SUNSET   748 PM EDT
AUGUST 18 2026........SUNRISE   606 AM EDT   SUNSET   746 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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