Climatological Report (Daily)
Issued by NWS Upton, NY

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437
CDUS41 KOKX 220620
CLIISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
220 AM EDT TUE SEP 22 2026

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

...THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 21 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         70    326 PM  84    1980  73     -3       71
  MINIMUM         59    704 AM  43    1973  57      2       52
                                      1991
  AVERAGE         65                        65      0       62

PRECIPITATION (IN)
  YESTERDAY        0.27          2.16 1966   0.13   0.14     0.00
  MONTH TO DATE    4.72                      2.49   2.23     1.24
  SINCE SEP 1      4.72                      2.49   2.23     1.24
  SINCE JAN 1     36.35                     32.79   3.56    25.02

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                         2     -2        3
  MONTH TO DATE    3                        20    -17        5
  SINCE SEP 1      3                        20    -17        5
  SINCE JUL 1      3                        23    -20        5

 COOLING
  YESTERDAY        0                         2     -2        0
  MONTH TO DATE  111                        92     19       86
  SINCE SEP 1    111                        92     19       86
  SINCE JAN 1    984                       856    128     1014
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION     N (10)
  HIGHEST GUST SPEED    30   HIGHEST GUST DIRECTION     N (10)
  AVERAGE WIND SPEED    11.0


SKY COVER
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97          1200 AM
 LOWEST     54           300 PM
 AVERAGE    76

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


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 2026.....SUNRISE   640 AM EDT   SUNSET   649 PM EDT
SEPTEMBER 23 2026.....SUNRISE   641 AM EDT   SUNSET   648 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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