Climatological Report (Daily)
Issued by NWS Upton, NY

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782
CDUS41 KOKX 280622
CLIISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
222 AM EDT MON SEP 28 2026

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

...THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 27 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         67   1237 PM  86    1998  71     -4       82
                                      2017
  MINIMUM         59    257 AM  38    1965  55      4       63
  AVERAGE         63                        63      0       73

PRECIPITATION (IN)
  YESTERDAY        1.92R         1.25 1975   0.12   1.80     0.03
  MONTH TO DATE    8.29                      3.20   5.09     1.57
  SINCE SEP 1      8.29                      3.20   5.09     1.57
  SINCE JAN 1     39.92                     33.50   6.42    25.35

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        2                         4     -2        0
  MONTH TO DATE   24                        40    -16        7
  SINCE SEP 1     24                        40    -16        7
  SINCE JUL 1     24                        43    -19        7

 COOLING
  YESTERDAY        0                         2     -2        8
  MONTH TO DATE  111                       104      7      131
  SINCE SEP 1    111                       104      7      131
  SINCE JAN 1    984                       868    116     1059
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    35   HIGHEST WIND DIRECTION    NE (30)
  HIGHEST GUST SPEED    51   HIGHEST GUST DIRECTION     N (20)
  AVERAGE WIND SPEED    18.4


SKY COVER
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97           100 PM
 LOWEST     84          1100 AM
 AVERAGE    91

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


THE ISLIP NY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   71        84      2025
 MINIMUM TEMPERATURE (F)   54        38      1989


SUNRISE AND SUNSET
SEPTEMBER 28 2026.....SUNRISE   646 AM EDT   SUNSET   639 PM EDT
SEPTEMBER 29 2026.....SUNRISE   647 AM EDT   SUNSET   638 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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