860  
CDUS41 KGYX 312151  
CLIPWM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GRAY ME  
451 PM EST THU DEC 31 2020  
   
...............................
 
 
   
..THE PORTLAND ME CLIMATE SUMMARY FOR DECEMBER 31 2020
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 43 1:19 PM 53 1990 33 10 39  
MINIMUM 36 5:17 AM -21 1963 15 21 28  
AVERAGE 40 24 16 34  
 
PRECIPITATION (IN)  
TODAY 0.01 1.49 1972 0.11 -0.10 0.75  
MONTH TO DATE 5.22 4.02 1.20 8.48  
SINCE DEC 1 5.22 4.02 1.20 8.48  
SINCE JAN 1 41.48 47.25 -5.77 52.40  
 
SNOWFALL (IN)  
TODAY 0.0 7.7 2007 0.6 -0.6 3.0  
MONTH TO DATE 20.0 13.2 6.8 26.1  
SINCE DEC 1 20.0 13.2 6.8 26.1  
SINCE JUL 1 20.1 15.1 5.0 26.4  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 25 41 -16 31  
MONTH TO DATE 1032 1120 -88 1050  
SINCE DEC 1 1032 1120 -88 1050  
SINCE JUL 1 2299 2611 -312 2485  
 
COOLING  
TODAY 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)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 9.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 5:00 AM  
LOWEST 52 4:00 PM  
AVERAGE 74  
   
......................................................
 
 
THE PORTLAND ME CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 33 56 1966  
MINIMUM TEMPERATURE (F) 15 -17 2018  
 
SUNRISE AND SUNSET  
DECEMBER 31 2020......SUNRISE 7:15 AM EST SUNSET 4:15 PM EST  
JANUARY 1 2021.......SUNRISE 7:15 AM EST SUNSET 4:15 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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