105  
CDUS41 KGYX 220908  
CLIPWM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GRAY ME  
408 AM EST TUE DEC 22 2020  
   
...............................
 
 
   
..THE PORTLAND ME CLIMATE SUMMARY FOR DECEMBER 21 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 31 11:59 PM 60 1957 36 -5 31  
MINIMUM 20 7:33 AM -14 1955 18 2 11  
AVERAGE 26 27 -1 21  
 
PRECIPITATION (IN)  
YESTERDAY T 2.05 1946 0.13 -0.13 0.00  
MONTH TO DATE 4.12 2.83 1.29 6.09  
SINCE DEC 1 4.12 2.83 1.29 6.09  
SINCE JAN 1 40.38 46.06 -5.68 50.01  
 
SNOWFALL (IN)  
YESTERDAY T 14.5 2008 0.5 -0.5 0.0  
MONTH TO DATE 20.0 7.9 12.1 13.2  
SINCE DEC 1 20.0 7.9 12.1 13.2  
SINCE JUL 1 20.1 9.8 10.3 13.5  
SNOW DEPTH 9  
 
DEGREE DAYS  
HEATING  
YESTERDAY 39 38 1 44  
MONTH TO DATE 728 723 5 730  
SINCE DEC 1 728 723 5 730  
SINCE JUL 1 1995 2214 -219 2165  
 
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 3 RESULTANT WIND DIRECTION NW (300)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 11 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 2.9  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 12:00 AM  
LOWEST 92 8:00 PM  
AVERAGE 96  
   
......................................................
 
 
THE PORTLAND ME CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 35 60 1949  
MINIMUM TEMPERATURE (F) 18 -14 1970  
 
SUNRISE AND SUNSET  
DECEMBER 22 2020......SUNRISE 7:12 AM EST SUNSET 4:08 PM EST  
DECEMBER 23 2020......SUNRISE 7:13 AM EST SUNSET 4:09 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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