244  
CDUS41 KGYX 150909  
CLIPWM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GRAY ME  
409 AM EST TUE DEC 15 2020  
   
...............................
 
 
   
..THE PORTLAND ME CLIMATE SUMMARY FOR DECEMBER 14 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 35 12:59 PM 55 2006 38 -3 54  
MINIMUM 27 10:07 PM -6 1976 21 6 37  
AVERAGE 31 29 2 46  
 
PRECIPITATION (IN)  
YESTERDAY T 3.40 2019 0.13 -0.13 3.40  
MONTH TO DATE 2.64 1.94 0.70 5.85  
SINCE DEC 1 2.64 1.94 0.70 5.85  
SINCE JAN 1 38.90 45.17 -6.27 49.77  
 
SNOWFALL (IN)  
YESTERDAY T 7.1 1917 0.4 -0.4 0.0  
MONTH TO DATE 1.7 4.7 -3.0 10.2  
SINCE DEC 1 1.7 4.7 -3.0 10.2  
SINCE JUL 1 1.8 6.6 -4.8 10.5  
SNOW DEPTH T  
 
DEGREE DAYS  
HEATING  
YESTERDAY 34 36 -2 19  
MONTH TO DATE 417 464 -47 458  
SINCE DEC 1 417 464 -47 458  
SINCE JUL 1 1684 1955 -271 1893  
 
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 N (360)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NE (50)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 3.3  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 2:00 AM  
LOWEST 75 2:00 PM  
AVERAGE 88  
   
......................................................
 
 
THE PORTLAND ME CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 38 57 2008  
MINIMUM TEMPERATURE (F) 21 -3 1989  
 
SUNRISE AND SUNSET  
DECEMBER 15 2020......SUNRISE 7:08 AM EST SUNSET 4:05 PM EST  
DECEMBER 16 2020......SUNRISE 7:09 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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