Climatological Report (Seasonal)
Issued by NWS Upton, NY

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866
CXUS51 KOKX 011336 RRA
CLSISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
836 AM EST SUN DEC 1 2019

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE SEASON, FROM
9/1/2019 TO 11/30/2019...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1963 TO 2019

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              93   09/01/2010
 LOW               11   11/24/1989
HIGHEST            89   10/02        MM      MM
LOWEST             20   11/14        MM      MM
AVG. MAXIMUM     64.1              63.3     0.8
AVG. MINIMUM     47.1              46.7     0.4
MEAN             55.6              55.0     0.6
DAYS MAX >= 90      0               0.2    -0.2
DAYS MAX <= 32      0               0.1    -0.1
DAYS MIN <= 32     13              10.0     3.0
DAYS MIN <= 0       0               0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        19.26   2018
 MINIMUM         4.02   2001
TOTALS           8.34             11.04   -2.70    19.26
DAILY AVG.       0.09              0.12   -0.03
DAYS >= .01        29              27.4     1.6
DAYS >= .10        18              17.4     0.6
DAYS >= .50         5               7.7    -2.7
DAYS >= 1.00        2               3.1    -1.1
GREATEST
 24 HR. TOTAL    2.18   MM
 STORM TOTAL       MM
 (MM/DD(HH))            MM

SNOWFALL (INCHES)
RECORDS
 TOTAL            7.6   1989
 24 HR TOTAL       MM
TOTALS            0.1               0.5    -0.4
 LIQUID EQUIV    0.01              0.10   -0.09
SINCE 7/1         0.1               0.5    -0.4
 LIQUID 7/1      0.01
DAYS >= TRACE       2               0.2     1.8
DAYS >= 1.0         0               0.1    -0.1
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL      0.1   MM
 STORM TOTAL       MM
 (MM/DD(HH))            MM

DEGREE_DAYS
HEATING TOTAL     941              1010     -69
 SINCE 7/1        943              1016     -73
COOLING TOTAL     111               101      10
 SINCE 1/1        985               787     198
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              9.4
HIGHEST WIND SPEED/DIRECTION    40/300    DATE  10/17
HIGHEST GUST SPEED/DIRECTION    55/300    DATE  10/17

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR           19
NUMBER OF DAYS PC             49
NUMBER OF DAYS CLOUDY         23

AVERAGE RH (PERCENT)     72

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
  7
  0
  0
  1
  0
  3
HAZE                      0

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

$$



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