Climatological Report (Seasonal) Issued by NWS Upton, NY
977
CXUS51 KOKX 021757 RRA
CLSISP
NYCCLSISP 000
TTAA00 OKX 021752
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
1252 PM EST TUE MAR 02 2021
...................................
...THE ISLIP NY CLIMATE SUMMARY FOR THE SEASON, FROM
12/1/2020 TO 2/28/2021...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1963 TO 2021
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..............................................................
TEMPERATURE (F)
RECORD
HIGH 77 12/07/1998
LOW -14 02/13/1967
HIGHEST 63 12/13 MM MM
LOWEST 13 02/08 MM MM
02/09
AVG. MAXIMUM 40.9 40.4 0.5
AVG. MINIMUM 27.3 25.6 1.7
MEAN 34.1 33.0 1.1
DAYS MAX >= 90 0 0.0 0.0
DAYS MAX <= 32 11 17.0 -6.0
DAYS MIN <= 32 69 68.4 0.6
DAYS MIN <= 0 0 0.1 -0.1
PRECIPITATION (INCHES)
RECORD
MAXIMUM 22.25 1979
MINIMUM 5.38 2002
TOTALS 10.57 10.96 -0.39 13.58
DAILY AVG. 0.12 0.12 -0.00
DAYS >= .01 35 30.9 4.1
DAYS >= .10 21 19.5 1.5
DAYS >= .50 9 7.5 1.5
DAYS >= 1.00 2 2.4 -0.4
GREATEST
24 HR. TOTAL 1.05 12/25 TO 12/25
STORM TOTAL MM
(MM/DD(HH))
SNOWFALL (INCHES)
RECORDS
TOTAL 57.8 2014
24 HR TOTAL 23.4 MM
TOTALS 33.5 19.2 14.3
LIQUID EQUIV 3.40 1.90 1.50
SINCE 7/1 33.5 19.7 13.8
LIQUID 7/1 3.35
DAYS >= TRACE 25 10.0 15.0
DAYS >= 1.0 7 6.0 1.0
GREATEST
SNOW DEPTH 11 02/02
02/08
24 HR TOTAL 10.3 02/01 TO 02/01
STORM TOTAL MM
(MM/DD(HH))
DEGREE DAYS
HEATING TOTAL 2749 2879 -130
SINCE 7/1 3520 3895 -375
COOLING TOTAL 0 0 0
SINCE 1/1 0 0 0
..............................................................
WIND (MPH)
AVERAGE WIND SPEED 10.3
HIGHEST WIND SPEED/DIRECTION 40/030 DATE 02/01
HIGHEST GUST SPEED/DIRECTION 54/030 DATE 02/01
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.63
NUMBER OF DAYS FAIR 12
NUMBER OF DAYS PC 47
NUMBER OF DAYS CLOUDY 31
AVERAGE RH (PERCENT) 71
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 1
HEAVY RAIN 7 RAIN 11
LIGHT RAIN 28 FREEZING RAIN 0
LT FREEZING RAIN 6 HAIL 0
HEAVY SNOW 3 SNOW 6
LIGHT SNOW 18 SLEET 12
FOG 44 FOG W/VIS <= 1/4 MILE 8
HAZE 8
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$