837  
CXUS51 KOKX 231439  
CLMISP  
 
NYCCLMISP 000  
TTAA00 OKX 040116  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
815 PM EST WED FEB 03 2021  
   
...............................
 
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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 DATE(S)  
NORMAL    
............................................................
 
 
TEMPERATURE (F)  
RECORD  
HIGH 69 01/29/2002  
LOW -8 01/18/1965  
HIGHEST 52 01/02 MM MM 68 01/12  
LOWEST 15 01/29 MM MM 16 01/22  
01/30  
AVG. MAXIMUM 39.7 38.0 1.7 44.8  
AVG. MINIMUM 26.1 23.3 2.8 29.7  
MEAN 32.9 30.6 2.3 37.3  
DAYS MAX >= 90 0 0.0 0.0 0  
DAYS MAX <= 32 4 8.0 -4.0 3  
DAYS MIN <= 32 25 25.2 -0.2 19  
DAYS MIN <= 0 0 0.1 -0.1 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 10.30 1979  
MINIMUM 0.51 1970  
TOTALS 1.86 3.64 -1.78 2.19  
DAILY AVG. 0.06 0.12 -0.06 0.07  
DAYS >= .01 9 11.0 -2.0 11  
DAYS >= .10 5 6.6 -1.6 5  
DAYS >= .50 2 2.6 -0.6 2  
DAYS >= 1.00 0 0.8 -0.8 0  
GREATEST  
24 HR. TOTAL 0.82 01/15 TO 01/16 0.95 01/25 TO 01/25  
STORM TOTAL 0.76 MM  
(MM/DD(HH)) MM  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL 34.4 2011  
24 HR TOTAL 23.4 MM  
TOTALS 1.1 6.7 -5.6 2.5  
LIQUID EQUIV 0.10 0.60 -0.50 0.25  
SINCE 7/1 8.6 12.6 -4.0 MM  
LIQUID 7/1 0.86 1.20 -0.34 MM  
DAYS >= TRACE 8 4.0 4.0 4  
DAYS >= 1.0 0 2.0 -2.0 1  
GREATEST  
SNOW DEPTH 0 -1 01/08  
24 HR TOTAL 0.8 01/31 TO 01/31 2.1 01/18 TO 01/18  
STORM TOTAL 0.8 MM  
(MM/DD(HH)) MM  
 
DEGREE DAYS  
HEATING TOTAL 987 1065 -78 852  
SINCE 7/1 2611 2994 -383 2659  
COOLING TOTAL 0 0 0 0  
SINCE 1/1 0 0 0 0    
............................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 10.4  
HIGHEST WIND SPEED/DIRECTION 38/320 DATE 01/29  
HIGHEST GUST SPEED/DIRECTION 48/330 DATE 01/29  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.57  
NUMBER OF DAYS FAIR 5  
NUMBER OF DAYS PC 20  
NUMBER OF DAYS CLOUDY 6  
 
AVERAGE RH (PERCENT) 67  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 0 MIXED PRECIP 0  
HEAVY RAIN 1 RAIN 2  
LIGHT RAIN 7 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 0  
HEAVY SNOW 0 SNOW 1  
LIGHT SNOW 5 SLEET 3  
FOG 13 FOG W/VIS <= 1/4 MILE 1  
HAZE 3  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab NY Page
The Nexlab NJ Page
The Nexlab CT Page Main Text Page