372  
CDUS41 KGYX 130901  
CLIPWM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GRAY ME  
401 AM EST SUN DEC 13 2020  
   
...............................
 
 
   
..THE PORTLAND ME CLIMATE SUMMARY FOR DECEMBER 12 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 41 2:51 PM 64 1979 39 2 33  
MINIMUM 27 7:13 AM -15 1977 22 5 23  
AVERAGE 34 30 4 28  
 
PRECIPITATION (IN)  
YESTERDAY 0.37 1.87 1952 0.14 0.23 0.00  
MONTH TO DATE 2.63 1.68 0.95 2.07  
SINCE DEC 1 2.63 1.68 0.95 2.07  
SINCE JAN 1 38.89 44.91 -6.02 45.99  
 
SNOWFALL (IN)  
YESTERDAY 0.0 14.7 1960 0.4 -0.4 0.0  
MONTH TO DATE 1.7 3.9 -2.2 10.2  
SINCE DEC 1 1.7 3.9 -2.2 10.2  
SINCE JUL 1 1.8 5.8 -4.0 10.5  
SNOW DEPTH 1  
 
DEGREE DAYS  
HEATING  
YESTERDAY 31 35 -4 37  
MONTH TO DATE 355 393 -38 406  
SINCE DEC 1 355 393 -38 406  
SINCE JUL 1 1622 1884 -262 1841  
 
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 5 RESULTANT WIND DIRECTION NE (30)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 6.1  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 2:00 AM  
LOWEST 79 10:00 AM  
AVERAGE 90  
   
......................................................
 
 
THE PORTLAND ME CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 38 60 1984  
MINIMUM TEMPERATURE (F) 21 -5 1976  
 
SUNRISE AND SUNSET  
DECEMBER 13 2020......SUNRISE 7:07 AM EST SUNSET 4:05 PM EST  
DECEMBER 14 2020......SUNRISE 7:07 AM EST SUNSET 4:05 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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