450  
CDUS41 KBOX 200556  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
1256 AM EST SAT NOV 20 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR NOVEMBER 19 2021
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1872 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 55 1202 AM 75 1941 50 5 46  
MINIMUM 37 1159 PM 14 1936 37 0 22  
AVERAGE 46 44 2 34  
 
PRECIPITATION (IN)  
YESTERDAY 0.28 1.71 1926 0.12 0.16 0.00  
MONTH TO DATE 1.08 2.25 -1.17 1.24  
SINCE SEP 1 13.66 9.84 3.82 7.19  
SINCE JAN 1 49.62 37.88 11.74 28.91  
 
SNOWFALL (IN)  
YESTERDAY 0.0 3.0 1986 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.2 -0.2 T  
SINCE SEP 1 0.0 0.4 -0.4 4.3  
SINCE JUL 1 0.0 0.4 -0.4 4.3  
 
DEGREE DAYS  
HEATING  
YESTERDAY 19 21 -2 31  
MONTH TO DATE 314 351 -37 298  
SINCE SEP 1 490 748 -258 683  
SINCE JUL 1 499 757 -258 685  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 170 100 70 97  
SINCE JAN 1 1146 800 346 924    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 14 RESULTANT WIND DIRECTION W (290)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 14.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 300 AM  
LOWEST 39 200 PM  
AVERAGE 65  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 50 74 1953  
MINIMUM TEMPERATURE (F) 37 15 1894  
 
SUNRISE AND SUNSET  
NOVEMBER 20 2021......SUNRISE 641 AM EST SUNSET 418 PM EST  
NOVEMBER 21 2021......SUNRISE 643 AM EST SUNSET 417 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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