Climatological Report (Daily)
Issued by NWS Upton, NY

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247
CDUS41 KOKX 260635
CLIISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
235 AM EDT WED AUG 26 2026

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

...THE ISLIP NY CLIMATE SUMMARY FOR AUGUST 25 2026...

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)
 YESTERDAY
  MAXIMUM         79    346 PM  92    1969  80     -1       84
                                      1998
                                      2021
  MINIMUM         60    327 AM  47    1971  65     -5       66
  AVERAGE         70                        73     -3       75

PRECIPITATION (IN)
  YESTERDAY        0.00          2.13 1985   0.14  -0.14     0.00
  MONTH TO DATE    7.70                      3.51   4.19     0.53
  SINCE JUN 1     16.13                     10.77   5.36     8.05
  SINCE JAN 1     31.39                     29.57   1.82    23.78

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        0
  SINCE JUN 1     10                        31    -21       18
  SINCE JUL 1      0                         1     -1        0

 COOLING
  YESTERDAY        5                         8     -3       10
  MONTH TO DATE  270                       229     41      221
  SINCE JUN 1    770                       693     77      890
  SINCE JAN 1    825                       722    103      902
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION    NW (310)
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION     W (270)
  AVERAGE WIND SPEED     7.8


SKY COVER
  AVERAGE SKY COVER 0.2


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    83           500 AM
 LOWEST     48           300 PM
 AVERAGE    66

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


THE ISLIP NY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   80        93      2016
 MINIMUM TEMPERATURE (F)   65        50      1977


SUNRISE AND SUNSET
AUGUST 26 2026........SUNRISE   613 AM EDT   SUNSET   734 PM EDT
AUGUST 27 2026........SUNRISE   614 AM EDT   SUNSET   733 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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