Climatological Report (Seasonal)
Issued by NWS Upton, NY

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CXUS51 KOKX 011714 RRA
CLSISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
1149 AM EST THU MAR 1 2018

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE SEASON, FROM
12/1/2017 TO 2/28/2018...

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              77   12/07/1998
 LOW               -7   01/15/1988
                        01/22/1984
HIGHEST            64   02/20        MM      MM
LOWEST              2   01/07        MM      MM
AVG. MAXIMUM     41.9              40.4     1.5
AVG. MINIMUM     26.8              25.6     1.2
MEAN             34.3              33.0     1.3
DAYS MAX >= 90      0               0.0     0.0
DAYS MAX <= 32     21              16.9     4.1
DAYS MIN <= 32     65              68.4    -3.4
DAYS MIN <= 0       0               0.1    -0.1

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        18.06   1998
 MINIMUM         5.38   2002
TOTALS          12.07             10.96    1.11     9.19
DAILY AVG.       0.14              0.12    0.02
DAYS >= .01        39              30.9     8.1
DAYS >= .10        23              19.5     3.5
DAYS >= .50         7               7.5    -0.5
DAYS >= 1.00        3               2.4     0.6
GREATEST
 24 HR. TOTAL    1.58   MM
 STORM TOTAL       MM
 (MM/DD(HH))            MM

SNOWFALL (INCHES)
RECORDS
 TOTAL           57.8   2014
 24 HR TOTAL     23.4   MM
TOTALS           29.4              19.2    10.2
 LIQUID EQUIV    2.94              1.90    1.04
SINCE 7/1        29.4              19.7     9.7
 LIQUID 7/1      2.94
DAYS >= TRACE      19               9.5     9.5
DAYS >= 1.0         7               5.7     1.3
GREATEST
 SNOW DEPTH        16   01/05
 24 HR TOTAL     16.0   MM
 STORM TOTAL       MM
 (MM/DD(HH))            MM

DEGREE_DAYS
HEATING TOTAL    2749              2879    -130
 SINCE 7/1         MM              3895      MM
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              9.8
HIGHEST WIND SPEED/DIRECTION    37/290    DATE  12/25
HIGHEST GUST SPEED/DIRECTION    46/310    DATE  12/25

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR           18
NUMBER OF DAYS PC             33
NUMBER OF DAYS CLOUDY         39

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
 11
  0
  0
  3
  2
 10
HAZE                      2

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

$$



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