Climatological Report (Monthly)
Issued by NWS Upton, NY

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000
CXUS51 KOKX 011653
CLMISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
1153 AM EST SUN JAN 1 2017

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1984 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              77   12/07/1998


 LOW                5   12/28/2004


HIGHEST            62   12/27        MM      MM       68  12/13
                                                          12/12
LOWEST             17   12/16        MM      MM       29  12/05
AVG. MAXIMUM     44.8              43.0     1.8     55.7
AVG. MINIMUM     28.4              28.2     0.2     41.1
MEAN             36.6              35.6     1.0     48.4
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      1               4.0    -3.0        0
DAYS MIN <= 32     22              21.2     0.8        5
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         8.91   1996
 MINIMUM         0.90   1985
TOTALS           3.53              4.06   -0.53     5.33
DAILY AVG.       0.11              0.13   -0.02     0.17
DAYS >= .01        10              10.8    -0.8       16
DAYS >= .10         7               7.0     0.0        9
DAYS >= .50         4               2.7     1.3        4
DAYS >= 1.00        0               1.0    -1.0        2
GREATEST
 24 HR. TOTAL    0.86   12/11 TO 12/12           12/23 TO 12/24
                                                          12/29 TO 12/29
                                                          12/28 TO 12/28
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    12/24(00) TO 12/24(00)
                                                 12/29(00) TO 12/29(00)8
                                                 12/28(00) TO 12/28(00)8

SNOWFALL (INCHES)
RECORDS
 TOTAL           25.3   2009
                        0
                        0
 24 HR TOTAL       MM
TOTALS            3.2               5.4    -2.2        T
 LIQUID EQUIV    0.32              0.50   -0.18       MM
SINCE 7/1         3.2               5.9    -2.7        T
 LIQUID 7/1      0.32              0.60   -0.28       MM
DAYS >= TRACE       3               2.4     0.6        2
DAYS >= 1.0         1               1.6    -0.6        0
GREATEST
 SNOW DEPTH         2   12/17                          0  MM
 24 HR TOTAL      3.0   12/17 TO 12/17           12/29 TO 12/29
                                                          12/28 TO 12/28
                                                          12/28 TO 12/28
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    12/29(00) TO 12/29(00)
                                                 12/28(00) TO 12/28(00)8
                                                 12/28(00) TO 12/28(00)8

DEGREE_DAYS
HEATING TOTAL     873               911     -38      508
 SINCE 7/1       1664              1927    -263     1260
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1124               787     337     1069
.........................................................

WIND (MPH)
AVERAGE WIND SPEED              9.2
HIGHEST WIND SPEED/DIRECTION    35/320    DATE  12/18
HIGHEST GUST SPEED/DIRECTION    44/320    DATE  12/18

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC             22
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       4
LIGHT RAIN               12     FREEZING RAIN              1
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                3     SLEET                      1
FOG                      15     FOG W/VIS <= 1/4 MILE      1
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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