487  
CDUS41 KBOX 050535  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
1235 AM EST SUN DEC 05 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR DECEMBER 4 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 42 138 PM 70 1982 46 -4 58  
MINIMUM 28 436 AM 2 1940 32 -4 40  
AVERAGE 35 39 -4 49  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.15 1968 0.15 -0.15 0.02  
MONTH TO DATE 0.02 0.58 -0.56 0.43  
SINCE DEC 1 0.02 0.58 -0.56 0.43  
SINCE JAN 1 49.90 39.87 10.03 32.30  
 
SNOWFALL (IN)  
YESTERDAY 0.0 6.0 1901 0.2 -0.2 0.0  
MONTH TO DATE 0.0 0.7 -0.7 0.0  
SINCE DEC 1 0.0 0.7 -0.7 0.0  
SINCE JUL 1 T 1.6 -1.6 4.3  
 
DEGREE DAYS  
HEATING  
YESTERDAY 30 26 4 16  
MONTH TO DATE 73 103 -30 77  
SINCE DEC 1 73 103 -30 77  
SINCE JUL 1 861 1117 -256 964  
 
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 9 RESULTANT WIND DIRECTION SW (240)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 9.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 62 1000 PM  
LOWEST 43 300 AM  
AVERAGE 53  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 45 66 2001  
MINIMUM TEMPERATURE (F) 32 4 1926  
 
SUNRISE AND SUNSET  
DECEMBER 5 2021......SUNRISE 658 AM EST SUNSET 412 PM EST  
DECEMBER 6 2021......SUNRISE 659 AM EST SUNSET 411 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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