113  
CDUS41 KBOX 110629  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
129 AM EST TUE DEC 11 2018  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR DECEMBER 10 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 39 242 PM 64 1907 43 -4 38  
1897  
MINIMUM 26 1159 PM -1 1902 30 -4 31  
AVERAGE 33 37 -4 35  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.58 1878 0.13 -0.13 0.03  
MONTH TO DATE 0.75 1.31 -0.56 1.32  
SINCE DEC 1 0.75 1.31 -0.56 1.32  
SINCE JAN 1 51.35 41.30 10.05 42.28  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.0 1928 0.3 -0.3 0.3  
MONTH TO DATE T 2.1 -2.1 6.1  
SINCE DEC 1 T 2.1 -2.1 6.1  
SINCE JUL 1 0.1 3.4 -3.3 6.1  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 32 28 4 30  
MONTH TO DATE 288 268 20 249  
SINCE DEC 1 288 268 20 249  
SINCE JUL 1 1312 1323 -11 1076  
 
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 NW (330)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION N (340)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION N (350)  
AVERAGE WIND SPEED 8.9  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 58 600 AM  
LOWEST 32 400 PM  
AVERAGE 45  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 43 68 1911  
MINIMUM TEMPERATURE (F) 30 -2 1876  
 
 
SUNRISE AND SUNSET  
DECEMBER 11 2018......SUNRISE 703 AM EST SUNSET 412 PM EST  
DECEMBER 12 2018......SUNRISE 704 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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