Climatological Report (Seasonal)
Issued by NWS Upton, NY

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000
CXUS51 KOKX 011545
CLSISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
1044 AM EST TUE MAR 1 2011


...THE ISLIP NY CLIMATE SUMMARY FOR THE SEASON, FROM
12/1/2010 TO 2/28/2011...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1986 TO 2011

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            60   02/18        MM      MM
LOWEST              4   01/24        MM      MM
AVG. MAXIMUM     38.0              41.9    -3.9
AVG. MINIMUM     22.8              25.5    -2.7
MEAN             30.4              33.7    -3.3
DAYS MAX >= 90      0               0.0     0.0
DAYS MAX <= 32     22              16.1     5.9
DAYS MIN <= 32     81              67.1    13.9
DAYS MIN <= 0       0               0.3    -0.3

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        17.31   2010
 MINIMUM         8.57   2007
TOTALS          12.46             11.73    0.73    17.31
DAILY AVG.       0.14              0.13    0.01
DAYS >= .01        27              31.1    -4.1
DAYS >= .10        19              20.0    -1.0
DAYS >= .50         9               7.9     1.1
DAYS >= 1.00        3               2.3     0.7
GREATEST
 24 HR. TOTAL    3.61   MM
 STORM TOTAL       MM
 (MM/DD(HH))            MM

SNOWFALL (INCHES)
RECORDS
 TOTAL           53.4   2010
 24 HR TOTAL     14.3   MM
TOTALS           53.2                MM      MM
 LIQUID EQUIV    5.32                MM      MM
SINCE 7/1        53.2                MM      MM
 LIQUID 7/1      5.32
DAYS >= TRACE      32                MM      MM
DAYS >= 1.0         8               5.4     2.6
GREATEST
 SNOW DEPTH        18   01/27
 24 HR TOTAL     14.0   MM
 STORM TOTAL       MM
 (MM/DD(HH))            MM

DEGREE_DAYS
HEATING TOTAL    3094              2912     182
 SINCE 7/1       3981              3905      76
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              10.7
HIGHEST WIND SPEED/DIRECTION    46/010    DATE  12/26
HIGHEST GUST SPEED/DIRECTION   9999MM     DATE  01/26

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM

NUMBER OF DAYS FAIR           17
NUMBER OF DAYS PC             41
NUMBER OF DAYS CLOUDY         32

AVERAGE RH (PERCENT)     61

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       7
LIGHT RAIN               14     FREEZING RAIN              2
LT FREEZING RAIN          5     HAIL                       0
HEAVY SNOW                4     SNOW                      10
LIGHT SNOW               30     SLEET                      6
FOG                      30     FOG W/VIS <= 1/4 MILE     11
HAZE                     28

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

$$






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