Climatological Report (Monthly)
Issued by NWS Upton, NY

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000
CXUS51 KOKX 011642
CLMISP

NYCCLMISP 000
TTAA00 KOKX 011636


CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
1142 AM EST THU JAN 1 2015

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1986 TO 2014

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            66   12/01        MM      MM       61  12/22
LOWEST             22   12/31        MM      MM       18  12/13
AVG. MAXIMUM     45.8              43.0     2.8     44.5
AVG. MINIMUM     33.4              28.2     5.2     29.7
MEAN             39.6              35.6     4.0     37.1
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      1               4.0    -3.0        3
DAYS MIN <= 32     19              21.2    -2.2       21
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         8.91   1996
 MINIMUM         0.90   1985
TOTALS           6.12              4.06    2.06     5.80
DAILY AVG.       0.20              0.13    0.07     0.19
DAYS >= .01        17              10.8     6.2       14
DAYS >= .10        11               7.0     4.0       10
DAYS >= .50         4               2.7     1.3        3
DAYS >= 1.00        3               1.0     2.0        2
GREATEST
 24 HR. TOTAL    2.14   12/09 TO 12/09           12/14 TO 12/15

 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM


SNOWFALL (INCHES)
RECORDS
 TOTAL           25.3   2009
 24 HR TOTAL       MM
TOTALS            0.4               5.4    -5.0      8.1
 LIQUID EQUIV    0.04              0.50   -0.46     0.81
SINCE 7/1         0.4               5.9    -5.5      8.4
 LIQUID 7/1      0.04              0.60   -0.56     0.84
DAYS >= TRACE       5               2.4     2.6        8
DAYS >= 1.0         0               1.6    -1.6        2
GREATEST
 SNOW DEPTH         T   12/11                          1  12/25
 24 HR TOTAL      0.3   MM                       12/15 TO 12/15

 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM

DEGREE_DAYS
HEATING TOTAL     782               911    -129      858
 SINCE 7/1       1695              1927    -232     1822
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        887               787     100      957
......................................................

WIND (MPH)
AVERAGE WIND SPEED              10.0
HIGHEST WIND SPEED/DIRECTION    33/010    DATE  12/09
HIGHEST GUST SPEED/DIRECTION    48/360    DATE  12/09

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            2
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY         16

AVERAGE RH (PERCENT)     71

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       7
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW                4     SLEET                      1
FOG                      17     FOG W/VIS <= 1/4 MILE      2
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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