940  
CDUS41 KBOX 040537  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
1237 AM EST SAT DEC 04 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR DECEMBER 3 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 45 1253 AM 69 2009 46 -1 50  
MINIMUM 33 1159 PM 0 1890 33 0 33  
AVERAGE 39 39 0 42  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.82 1986 0.15 -0.15 0.00  
MONTH TO DATE 0.02 0.43 -0.41 0.41  
SINCE DEC 1 0.02 0.43 -0.41 0.41  
SINCE JAN 1 49.90 39.72 10.18 32.28  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.8 2019 0.2 -0.2 0.0  
MONTH TO DATE 0.0 0.5 -0.5 0.0  
SINCE DEC 1 0.0 0.5 -0.5 0.0  
SINCE JUL 1 T 1.4 -1.4 4.3  
 
DEGREE DAYS  
HEATING  
YESTERDAY 26 26 0 23  
MONTH TO DATE 43 77 -34 61  
SINCE DEC 1 43 77 -34 61  
SINCE JUL 1 831 1091 -260 948  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1146 800 346 924    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 16 RESULTANT WIND DIRECTION W (280)  
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 16.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 76 1200 AM  
LOWEST 33 500 PM  
AVERAGE 55  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 46 70 1982  
MINIMUM TEMPERATURE (F) 32 2 1940  
 
SUNRISE AND SUNSET  
DECEMBER 4 2021......SUNRISE 657 AM EST SUNSET 412 PM EST  
DECEMBER 5 2021......SUNRISE 658 AM EST SUNSET 412 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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