Climatological Report (Annual)
Issued by NWS Upton, NY

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000
CXUS51 KOKX 052001
CLAISP

NYCCLMISP 000
TTAA00 KOKX 051637


CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
301 PM EST TUE JAN 5 2010

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE YEAR OF 2009...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1986 TO 2010

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             102   07/05/1999
 LOW               -7   01/15/1988
HIGHEST            91   08/10        MM      MM       95  06/09
LOWEST              2   01/17        MM      MM       10  01/04
AVG. MAXIMUM     59.5              61.3    -1.8     61.5
AVG. MINIMUM     44.1              43.6     0.5     44.7
MEAN             51.8              52.5    -0.7     53.1
DAYS MAX >= 90      3               7.2    -4.2        6
DAYS MAX <= 32     25              17.3     7.7       10
DAYS MIN <= 32    100              98.3     1.7      110
DAYS MIN <= 0       0               0.3    -0.3        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        65.32   1989
 MINIMUM        34.41   1985
TOTALS          52.70             46.52    6.18    52.17
DAILY AVG.       0.14              0.13    0.01     0.14
DAYS >= .01       134             119.2    14.8      141
DAYS >= .10        90              75.4    14.6       83
DAYS >= .50        42              30.8    11.2       34
DAYS >= 1.00       15              11.7     3.3       13
GREATEST
 24 HR. TOTAL    2.34   07/23 TO 07/24              3.92 12/11 TO 12/12
 STORM TOTAL       MM   MM                            MM  MM
 (MM/DD(HH))

SNOWFALL (INCHES)
RECORDS
 TOTAL           59.9   2005
 24 HR TOTAL     23.9   12/19/2009 TO 12/20/2009
 SNOW DEPTH        22   12/21/2009
TOTALS           51.1                MM      MM     18.5
 LIQUID EQUIV    5.11                MM      MM     1.85
SINCE 7/1        25.3                MM      MM     10.4
 LIQUID 7/1      2.53                MM      MM     1.04
SNOWDEPTH AVG.      1                MM      MM        0
DAYS >= TRACE      28                MM      MM       27
DAYS >= 1.0        10               7.2     2.8        6
GREATEST
 SNOW DEPTH        22   12/21                          4  12/21
                                                          12/20
 24 HR TOTAL     23.9   12/19 TO 12/20               5.5  02/22 TO 02/22
 STORM TOTAL       MM   MM                            MM  MM
 (MM/DD(HH))

DEGREE_DAYS
HEATING TOTAL    5356              5387     -31     5144
 SINCE 7/1       1837              1902     -65     1883
COOLING TOTAL     657               770    -113      890
 SINCE 1/1        657               770    -113      890

FREEZE DATES
RECORD
 EARLIEST     MM
 LATEST       MM
EARLIEST                        MM
LATEST                          MM
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.9
RESULTANT WIND SPEED/DIRECTION   2/301
HIGHEST WIND SPEED/DIRECTION    40/270    DATE  02/12
HIGHEST GUST SPEED/DIRECTION    60/270    DATE  02/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM

NUMBER OF DAYS FAIR           72
NUMBER OF DAYS PC            142
NUMBER OF DAYS CLOUDY        151

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             35     MIXED PRECIP               0
HEAVY RAIN               29     RAIN                      63
LIGHT RAIN              157     FREEZING RAIN              0
LT FREEZING RAIN          4     HAIL                       0
HEAVY SNOW                3     SNOW                      15
LIGHT SNOW               23     SLEET                      7
FOG                     181     FOG W/VIS <= 1/4 MILE     31
HAZE                    127

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

$$






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