943  
CDUS41 KBOX 100607  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
1256 AM EST MON DEC 10 2018  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR DECEMBER 9 2018
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1872 TO 2018  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 37 223 PM 70 1966 43 -6 37  
MINIMUM 23 703 AM -8 1902 31 -8 31  
AVERAGE 30 37 -7 34  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.90 2014 0.13 -0.13 0.66  
MONTH TO DATE 0.75 1.18 -0.43 1.29  
SINCE DEC 1 0.75 1.18 -0.43 1.29  
SINCE JAN 1 51.35 41.17 10.18 42.25  
 
SNOWFALL (IN)  
YESTERDAY 0.0 8.6 2005 0.2 -0.2 5.8  
MONTH TO DATE T 1.8 -1.8 5.8  
SINCE DEC 1 T 1.8 -1.8 5.8  
SINCE JUL 1 0.1 3.1 -3.0 5.8  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 35 28 7 31  
MONTH TO DATE 256 240 16 219  
SINCE DEC 1 256 240 16 219  
SINCE JUL 1 1280 1295 -15 1046  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1132 747 385 880    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION SW (240)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 9.4  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 68 600 AM  
LOWEST 36 1200 AM  
AVERAGE 52  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 43 64 1907  
1897  
MINIMUM TEMPERATURE (F) 30 -1 1902  
 
 
SUNRISE AND SUNSET  
DECEMBER 10 2018......SUNRISE 702 AM EST SUNSET 411 PM EST  
DECEMBER 11 2018......SUNRISE 703 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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