150  
CDUS41 KBOX 122121  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
421 PM EST SUN DEC 12 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR DECEMBER 12 2021
 
 
VALID AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 62 1202 AM 68 1911 43 19 47  
1979  
MINIMUM 42 1015 AM 2 1988 30 12 35  
AVERAGE 52 37 15 41  
 
PRECIPITATION (IN)  
TODAY 0.04 4.21 1992 0.14 -0.10 0.50  
MONTH TO DATE 0.57 1.74 -1.17 2.65  
SINCE DEC 1 0.57 1.74 -1.17 2.65  
SINCE JAN 1 50.45 41.03 9.42 34.52  
 
SNOWFALL (IN)  
TODAY 0.0 13.0 1960 0.3 -0.3 0.0  
MONTH TO DATE 0.3 2.6 -2.3 0.3  
SINCE DEC 1 0.3 2.6 -2.3 0.3  
SINCE JUL 1 0.3 3.5 -3.2 4.6  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 13 28 -15 24  
MONTH TO DATE 280 322 -42 313  
SINCE DEC 1 280 322 -42 313  
SINCE JUL 1 1068 1336 -268 1200  
 
COOLING  
TODAY 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)  
HIGHEST WIND SPEED 37 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 47 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 19.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 80 1200 AM  
LOWEST 24 100 PM  
AVERAGE 52  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 43 63 1984  
MINIMUM TEMPERATURE (F) 30 4 1890  
1893  
1898  
 
SUNRISE AND SUNSET  
DECEMBER 12 2021......SUNRISE 704 AM EST SUNSET 412 PM EST  
DECEMBER 13 2021......SUNRISE 705 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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