Climatological Report (Seasonal)
Issued by NWS Upton, NY

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CXUS51 KOKX 031833 RRC
CLSISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
130 PM EST MON DEC 3 2018

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE SEASON, FROM
9/1/2018 TO 11/30/2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1963 TO 2018

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            92   09/04        MM      MM
LOWEST             15   11/23        MM      MM
AVG. MAXIMUM     63.7              63.3     0.4
AVG. MINIMUM     49.2              46.7     2.5
MEAN             56.5              55.0     1.5
DAYS MAX >= 90      1               0.2     0.8
DAYS MAX <= 32      2               0.1     1.9
DAYS MIN <= 32     11              10.0     1.0
DAYS MIN <= 0       0               0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        18.55   2005
 MINIMUM         4.02   2001
TOTALS          19.26R            11.04    8.22    12.97
DAILY AVG.       0.21              0.12    0.09
DAYS >= .01        38              27.4    10.6
DAYS >= .10        23              17.4     5.6
DAYS >= .50        16               7.7     8.3
DAYS >= 1.00       10               3.1     6.9
GREATEST
 24 HR. TOTAL    1.84   MM
 STORM TOTAL       MM
 (MM/DD(HH))            MM

SNOWFALL (INCHES)
RECORDS
 TOTAL            7.6   1989
 24 HR TOTAL       MM
TOTALS            4.3               0.5     3.8
 LIQUID EQUIV    0.43              0.10    0.33
SINCE 7/1         4.3               0.5     3.8
 LIQUID 7/1      0.43
DAYS >= TRACE       3               0.2     2.8
DAYS >= 1.0         1               0.1     0.9
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL      4.3   MM
 STORM TOTAL       MM
 (MM/DD(HH))            MM

DEGREE_DAYS
HEATING TOTAL     967              1010     -43
 SINCE 7/1        967              1016     -49
COOLING TOTAL     218               101     117
 SINCE 1/1       1115               787     328
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              9.1
HIGHEST WIND SPEED/DIRECTION    36/340    DATE  11/16
HIGHEST GUST SPEED/DIRECTION    47/230    DATE  10/02

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR           12
NUMBER OF DAYS PC             38
NUMBER OF DAYS CLOUDY         41

AVERAGE RH (PERCENT)     76

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
 19
  0
  0
  1
  2
  8
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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