953  
CDUS41 KBOX 160927  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
427 AM EST THU DEC 16 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR DECEMBER 15 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 1159 PM 66 1975 42 3 36  
MINIMUM 32 657 AM -2 1874 29 3 23  
AVERAGE 39 36 3 30  
 
PRECIPITATION (IN)  
YESTERDAY 0.02 1.51 1981 0.14 -0.12 0.00  
MONTH TO DATE 0.59 2.16 -1.57 2.71  
SINCE DEC 1 0.59 2.16 -1.57 2.71  
SINCE JAN 1 50.47 41.45 9.02 34.58  
 
SNOWFALL (IN)  
YESTERDAY 0.0 6.1 1916 0.3 -0.3 0.0  
MONTH TO DATE 0.3 3.4 -3.1 0.3  
SINCE DEC 1 0.3 3.4 -3.1 0.3  
SINCE JUL 1 0.3 4.3 -4.0 4.6  
 
DEGREE DAYS  
HEATING  
YESTERDAY 26 29 -3 35  
MONTH TO DATE 350 409 -59 391  
SINCE DEC 1 350 409 -59 391  
SINCE JUL 1 1138 1423 -285 1278  
 
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 2 RESULTANT WIND DIRECTION SE (150)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (170)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION S (160)  
AVERAGE WIND SPEED 7.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 1100 PM  
LOWEST 34 100 AM  
AVERAGE 62  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 42 64 1971  
MINIMUM TEMPERATURE (F) 29 1 1876  
1883  
 
SUNRISE AND SUNSET  
DECEMBER 16 2021......SUNRISE 707 AM EST SUNSET 413 PM EST  
DECEMBER 17 2021......SUNRISE 708 AM EST SUNSET 413 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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