Climatological Report (Seasonal)
Issued by NWS Upton, NY

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CXUS51 KOKX 031232
CLSISP

NYCCLSISP 000
TTAA00 OKX 031219

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
832 AM EDT FRI SEP 03 2021

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE SEASON, FROM
6/1/2021 TO 8/31/2021...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1963 TO 2021

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH            104   07/03/1966
 LOW              42   06/01/2009
                       06/03/1976
                       06/12/1972
HIGHEST           94   08/27         MM      MM
LOWEST            49   06/01         MM      MM
AVG. MAXIMUM    81.4               80.5     0.9
AVG. MINIMUM    66.0               64.7     1.3
MEAN            73.7               72.6     1.1
DAYS MAX >= 90     9                8.0     1.0
DAYS MAX <= 32     0                0.0     0.0
DAYS MIN <= 32     0                0.0     0.0
DAYS MIN <= 0      0                0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       22.31   1990
 MINIMUM        3.67   1966
TOTALS         13.35              11.50    1.85     9.96
DAILY AVG.      0.14               0.13    0.01
DAYS >= .01       31               28.1     2.9
DAYS >= .10       18               17.4     0.6
DAYS >= .50        8                7.0     1.0
DAYS >= 1.00       4                2.8     1.2
GREATEST
 24 HR. TOTAL   2.26   07/08 TO 07/09
 STORM TOTAL    2.16
 (MM/DD(HH))

SNOWFALL (INCHES)
RECORDS
 TOTAL             T   2020
 24 HR TOTAL      MM
TOTALS           0.0                0.0     0.0
 LIQUID EQUIV   0.00               0.00    0.00
SINCE 7/1        0.0                0.0     0.0
 LIQUID 7/1     0.00
DAYS >= TRACE      0                0.0     0.0
DAYS >= 1.0        0                0.0     0.0
GREATEST
 SNOW DEPTH        0
 24 HR TOTAL     0.0
 STORM TOTAL     0.0
 (MM/DD(HH))

DEGREE DAYS
HEATING TOTAL     11                 33     -22
 SINCE 7/1         3                  1       2
COOLING TOTAL    839                735     104
 SINCE 1/1       878                764     114
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              7.8
HIGHEST WIND SPEED/DIRECTION    38/030    DATE  07/09
HIGHEST GUST SPEED/DIRECTION    50/360    DATE  07/09

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.62
NUMBER OF DAYS FAIR           18
NUMBER OF DAYS PC             41
NUMBER OF DAYS CLOUDY         33

AVERAGE RH (PERCENT)     78

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             13     MIXED PRECIP               0
HEAVY RAIN               10     RAIN                      15
LIGHT RAIN               44     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      47     FOG W/VIS <= 1/4 MILE      6
HAZE                      4

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$


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