Climatological Report (Seasonal)
Issued by NWS Upton, NY

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CXUS51 KOKX 021634
CLSISP

NYCCLMISP 000
TTAA00 KOKX 021559


CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
1134 AM EST WED DEC 2 2009

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE SEASON, FROM
9/1/2009 TO 11/30/2009...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1986 TO 2009

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              92   09/07/1998
 LOW               11   11/24/1989
HIGHEST            85   09/05        MM      MM
LOWEST             28   11/07        MM      MM
AVG. MAXIMUM     63.5              64.2    -0.7
AVG. MINIMUM     47.8              45.8     2.0
MEAN             55.7              55.0     0.7
DAYS MAX >= 90      0               0.2    -0.2
DAYS MAX <= 32      0               0.1    -0.1
DAYS MIN <= 32      1              11.0   -10.0
DAYS MIN <= 0       0               0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        18.55   2005
 MINIMUM         4.02   2001
TOTALS          10.81             10.88   -0.07    13.63
DAILY AVG.       0.12              0.12    0.00
DAYS >= .01        31              27.3     3.7
DAYS >= .10        16              17.3    -1.3
DAYS >= .50        10               7.7     2.3
DAYS >= 1.00        3               3.1    -0.1
GREATEST
 24 HR. TOTAL    1.40   MM
 STORM TOTAL       MM
 (MM/DD(HH))            MM

SNOWFALL (INCHES)
RECORDS
 TOTAL            7.6   1989
 24 HR TOTAL       MM
TOTALS            0.0                MM      MM
 LIQUID EQUIV    0.00                MM      MM
SINCE 7/1         0.0                MM      MM
 LIQUID 7/1      0.00
DAYS >= TRACE       0                MM      MM
DAYS >= 1.0         0               0.1    -0.1
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL      0.0   MM
 STORM TOTAL       MM
 (MM/DD(HH))            MM

DEGREE_DAYS
HEATING TOTAL     891               992    -101
 SINCE 7/1        899               993     -94
COOLING TOTAL      56                79     -23
 SINCE 1/1        657               770    -113

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

WIND (MPH)
AVERAGE WIND SPEED              8.7
HIGHEST WIND SPEED/DIRECTION    37/290    DATE  11/28
HIGHEST GUST SPEED/DIRECTION    51/290    DATE  11/28

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM

NUMBER OF DAYS FAIR           12
NUMBER OF DAYS PC             40
NUMBER OF DAYS CLOUDY         39

AVERAGE RH (PERCENT)     67

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              6     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                      14
LIGHT RAIN               44     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      32     FOG W/VIS <= 1/4 MILE      5
HAZE                     22

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

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