175  
CDUS41 KGYX 190903  
CLIPWM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GRAY ME  
403 AM EST SAT DEC 19 2020  
   
...............................
 
 
   
..THE PORTLAND ME CLIMATE SUMMARY FOR DECEMBER 18 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 28 3:18 PM 53 1996 37 -9 34  
MINIMUM 15 11:23 PM -9 1963 20 -5 24  
AVERAGE 22 28 -6 29  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 3.50 2012 0.13 -0.13 0.01  
MONTH TO DATE 4.04 2.46 1.58 6.09  
SINCE DEC 1 4.04 2.46 1.58 6.09  
SINCE JAN 1 40.30 45.69 -5.39 50.01  
 
SNOWFALL (IN)  
YESTERDAY 0.0 8.9 1975 0.4 -0.4 0.5  
MONTH TO DATE 19.3 6.4 12.9 13.2  
SINCE DEC 1 19.3 6.4 12.9 13.2  
SINCE JUL 1 19.4 8.3 11.1 13.5  
SNOW DEPTH 12  
 
DEGREE DAYS  
HEATING  
YESTERDAY 43 37 6 36  
MONTH TO DATE 599 610 -11 590  
SINCE DEC 1 599 610 -11 590  
SINCE JUL 1 1866 2101 -235 2025  
 
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 10 RESULTANT WIND DIRECTION N (360)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION N (10)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 10.1  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 11:00 PM  
LOWEST 52 8:00 AM  
AVERAGE 68  
   
......................................................
 
 
THE PORTLAND ME CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 36 54 1949  
MINIMUM TEMPERATURE (F) 19 -13 1975  
 
SUNRISE AND SUNSET  
DECEMBER 19 2020......SUNRISE 7:11 AM EST SUNSET 4:07 PM EST  
DECEMBER 20 2020......SUNRISE 7:11 AM EST SUNSET 4:07 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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