066  
CDUS41 KGYX 210906  
CLIPWM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GRAY ME  
406 AM EST MON DEC 21 2020  
   
...............................
 
 
   
..THE PORTLAND ME CLIMATE SUMMARY FOR DECEMBER 20 2020
 
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1941 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 32 8:59 PM 53 1957 36 -4 30  
MINIMUM 15 7:20 AM -20 1975 19 -4 5  
AVERAGE 24 27 -3 18  
 
PRECIPITATION (IN)  
YESTERDAY 0.08 1.79 1939 0.12 -0.04 0.00  
MONTH TO DATE 4.12 2.70 1.42 6.09  
SINCE DEC 1 4.12 2.70 1.42 6.09  
SINCE JAN 1 40.38 45.93 -5.55 50.01  
 
SNOWFALL (IN)  
YESTERDAY 0.7 8.6 1995 0.5 0.2 0.0  
MONTH TO DATE 20.0 7.4 12.6 13.2  
SINCE DEC 1 20.0 7.4 12.6 13.2  
SINCE JUL 1 20.1 9.3 10.8 13.5  
SNOW DEPTH 9  
 
DEGREE DAYS  
HEATING  
YESTERDAY 41 38 3 47  
MONTH TO DATE 689 685 4 686  
SINCE DEC 1 689 685 4 686  
SINCE JUL 1 1956 2176 -220 2121  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 681 359 322 474    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION W (280)  
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 9 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 1.4  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT SNOW  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 5:00 PM  
LOWEST 66 11:00 AM  
AVERAGE 83  
   
......................................................
 
 
THE PORTLAND ME CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 36 60 1957  
MINIMUM TEMPERATURE (F) 18 -14 1955  
 
SUNRISE AND SUNSET  
DECEMBER 21 2020......SUNRISE 7:12 AM EST SUNSET 4:08 PM EST  
DECEMBER 22 2020......SUNRISE 7:12 AM EST SUNSET 4:08 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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