588  
CDUS41 KBOX 160528  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
1228 AM EST SUN DEC 16 2018  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR DECEMBER 15 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 55 245 PM 66 1975 41 14 27  
MINIMUM 40 925 PM -2 1874 28 12 17  
AVERAGE 48 35 13 22  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.51 1981 0.13 -0.13 T  
MONTH TO DATE 0.75 1.93 -1.18 1.36  
SINCE DEC 1 0.75 1.93 -1.18 1.36  
SINCE JAN 1 51.35 41.92 9.43 42.32  
 
SNOWFALL (IN)  
YESTERDAY 0.0 6.1 1916 0.2 -0.2 T  
MONTH TO DATE T 3.4 -3.4 6.1  
SINCE DEC 1 T 3.4 -3.4 6.1  
SINCE JUL 1 0.1 4.7 -4.6 6.1  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 17 30 -13 43  
MONTH TO DATE 436 415 21 422  
SINCE DEC 1 436 415 21 422  
SINCE JUL 1 1460 1470 -10 1249  
 
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 2 RESULTANT WIND DIRECTION W (260)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 9.2  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 1200 AM  
LOWEST 54 300 PM  
AVERAGE 73  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 41 64 1971  
MINIMUM TEMPERATURE (F) 28 1 1883  
1876  
 
 
SUNRISE AND SUNSET  
DECEMBER 16 2018......SUNRISE 707 AM EST SUNSET 413 PM EST  
DECEMBER 17 2018......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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