406  
CDUS41 KBOX 150639  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
139 AM EST SAT DEC 15 2018  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR DECEMBER 14 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 46 1159 PM 66 1881 42 4 30  
MINIMUM 29 428 AM 0 1898 29 0 19  
1893  
AVERAGE 38 35 3 25  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.99 2002 0.12 -0.12 T  
MONTH TO DATE 0.75 1.80 -1.05 1.36  
SINCE DEC 1 0.75 1.80 -1.05 1.36  
SINCE JAN 1 51.35 41.79 9.56 42.32  
 
SNOWFALL (IN)  
YESTERDAY 0.0 6.5 1995 0.3 -0.3 T  
MONTH TO DATE T 3.2 -3.2 6.1  
SINCE DEC 1 T 3.2 -3.2 6.1  
SINCE JUL 1 0.1 4.5 -4.4 6.1  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 27 30 -3 40  
MONTH TO DATE 419 385 34 379  
SINCE DEC 1 419 385 34 379  
SINCE JUL 1 1443 1440 3 1206  
 
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 4 RESULTANT WIND DIRECTION S (170)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 5.8  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 1100 PM  
LOWEST 53 100 PM  
AVERAGE 73  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 41 66 1975  
MINIMUM TEMPERATURE (F) 28 -2 1874  
 
 
SUNRISE AND SUNSET  
DECEMBER 15 2018......SUNRISE 706 AM EST SUNSET 412 PM EST  
DECEMBER 16 2018......SUNRISE 707 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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