Climatological Report (Seasonal) Issued by NWS Upton, NY
000
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.
$$