Climatological Report (Seasonal)
Issued by NWS Upton, NY

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CXUS51 KOKX 012218
CLSISP

NYCCLMISP 000
TTAA00 KOKX 011810


CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
618 PM EDT MON JUN 1 2009

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

...THE ISLIP NY CLIMATE SUMMARY FOR THE SEASON, FROM
3/1/2009 TO 5/31/2009...

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              98   05/20/1996
 LOW                5   03/04/2009
HIGHEST            88   04/26        MM      MM
LOWEST              5R  03/04        MM      MM
AVG. MAXIMUM     57.7              58.5    -0.8
AVG. MINIMUM     41.2              40.2     1.0
MEAN             49.5              49.4     0.1
DAYS MAX >= 90      0               0.6    -0.6
DAYS MAX <= 32      3               1.1     1.9
DAYS MIN <= 32     22              20.2     1.8
DAYS MIN <= 0       0               0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        22.91   1998
 MINIMUM         6.00   1995
TOTALS          13.17             12.79    0.38    13.44
DAILY AVG.       0.14              0.14    0.00
DAYS >= .01        35              33.0     2.0
DAYS >= .10        27              20.6     6.4
DAYS >= .50        10               8.0     2.0
DAYS >= 1.00        2               3.1    -1.1
GREATEST
 24 HR. TOTAL    1.78   04/20 TO 04/21
 STORM TOTAL       MM
 (MM/DD(HH))            MM

SNOWFALL (INCHES)
RECORDS
 TOTAL           18.0   1996
 24 HR TOTAL       MM   MM
TOTALS           13.6                MM      MM
 LIQUID EQUIV    1.36                MM      MM
SINCE 7/1        36.2                MM      MM
 LIQUID 7/1      3.62
DAYS >= TRACE       5                MM      MM
DAYS >= 1.0         2               1.7     0.3
GREATEST
 SNOW DEPTH        11   03/03
 24 HR TOTAL      9.7   03/02 TO 03/02
 STORM TOTAL       MM
 (MM/DD(HH))            MM

DEGREE_DAYS
HEATING TOTAL    1424              1458     -34
 SINCE 7/1       5348              5363     -15
COOLING TOTAL      19                15       4
 SINCE 1/1         19                15       4

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

WIND (MPH)
AVERAGE WIND SPEED              9.2
HIGHEST WIND SPEED/DIRECTION    32/030    DATE  03/02
HIGHEST GUST SPEED/DIRECTION    41/310    DATE  04/05

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM

NUMBER OF DAYS FAIR           15
NUMBER OF DAYS PC             32
NUMBER OF DAYS CLOUDY         45

AVERAGE RH (PERCENT)     64

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             10     MIXED PRECIP               0
HEAVY RAIN               11     RAIN                      18
LIGHT RAIN               40     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       2
LIGHT SNOW                4     SLEET                      2
FOG                      53     FOG W/VIS <= 1/4 MILE     16
HAZE                     35

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

$$






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