703  
CDUS41 KGYX 172148  
CLIPWM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GRAY ME  
448 PM EST THU DEC 17 2020  
   
...............................
 
 
   
..THE PORTLAND ME CLIMATE SUMMARY FOR DECEMBER 17 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 18 2:59 PM 57 1984 37 -19 32  
MINIMUM 12 8:29 AM -12 1942 20 -8 24  
AVERAGE 15 28 -13 28  
 
PRECIPITATION (IN)  
TODAY 0.84 2.88 1973 0.13 0.71 0.23  
MONTH TO DATE 3.48 2.33 1.15 6.08  
SINCE DEC 1 3.48 2.33 1.15 6.08  
SINCE JAN 1 39.74 45.56 -5.82 50.00  
 
SNOWFALL (IN)  
TODAY 17.6 22.3 1970 0.5 17.1 2.5  
MONTH TO DATE 19.3 6.0 13.3 12.7  
SINCE DEC 1 19.3 6.0 13.3 12.7  
SINCE JUL 1 19.4 7.9 11.5 13.0  
SNOW DEPTH 3  
 
DEGREE DAYS  
HEATING  
TODAY 50 37 13 37  
MONTH TO DATE 558 573 -15 554  
SINCE DEC 1 558 573 -15 554  
SINCE JUL 1 1825 2064 -239 1989  
 
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 24 HIGHEST WIND DIRECTION N (10)  
HIGHEST GUST SPEED 76 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 16.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HEAVY SNOW  
SNOW  
LIGHT SNOW  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
BLOWING SNOW  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 1:00 PM  
LOWEST 51 1:00 AM  
AVERAGE 72  
   
......................................................
 
 
THE PORTLAND ME CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 37 53 1996  
MINIMUM TEMPERATURE (F) 20 -9 1963  
 
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.  
 

 
 
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