819  
CDUS41 KGYX 170904  
CLIPWM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GRAY ME  
404 AM EST THU DEC 17 2020  
   
...............................
 
 
   
..THE PORTLAND ME CLIMATE SUMMARY FOR DECEMBER 16 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 22 2:54 PM 56 2008 37 -15 34  
MINIMUM 10 7:17 AM -9 1951 20 -10 23  
AVERAGE 16 29 -13 29  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.96 2005 0.13 -0.13 0.00  
MONTH TO DATE 2.64 2.20 0.44 5.85  
SINCE DEC 1 2.64 2.20 0.44 5.85  
SINCE JAN 1 38.90 45.43 -6.53 49.77  
 
SNOWFALL (IN)  
YESTERDAY 0.0 10.7 1916 0.4 -0.4 0.0  
MONTH TO DATE 1.7 5.5 -3.8 10.2  
SINCE DEC 1 1.7 5.5 -3.8 10.2  
SINCE JUL 1 1.8 7.4 -5.6 10.5  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 49 36 13 36  
MONTH TO DATE 508 536 -28 517  
SINCE DEC 1 508 536 -28 517  
SINCE JUL 1 1775 2027 -252 1952  
 
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 6 RESULTANT WIND DIRECTION N (10)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION NE (30)  
AVERAGE WIND SPEED 7.3  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 66 6:00 AM  
LOWEST 31 1:00 PM  
AVERAGE 49  
   
......................................................
 
 
THE PORTLAND ME CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 37 57 1984  
MINIMUM TEMPERATURE (F) 20 -12 1942  
 
SUNRISE AND SUNSET  
DECEMBER 17 2020......SUNRISE 7:09 AM EST SUNSET 4:06 PM EST  
DECEMBER 18 2020......SUNRISE 7:10 AM EST SUNSET 4:06 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab ME Page
The Nexlab NH Page Main Text Page