213  
CDUS41 KBOX 312130  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
420 PM EST MON DEC 31 2018  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR DECEMBER 31 2018
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 45 150 PM 65 1932 37 8 13  
MINIMUM 31 118 AM -8 1917 24 7 4  
AVERAGE 38 30 8 9  
 
PRECIPITATION (IN)  
TODAY 0.00 1.68 1906 0.10 -0.10 0.00  
MONTH TO DATE 2.31 3.78 -1.47 2.49  
SINCE DEC 1 2.31 3.78 -1.47 2.49  
SINCE JAN 1 52.91 43.77 9.14 43.45  
 
SNOWFALL (IN)  
TODAY 0.0 6.5 2008 0.4 -0.4 0.0  
MONTH TO DATE 0.1 9.0 -8.9 9.2  
SINCE DEC 1 0.1 9.0 -8.9 9.2  
SINCE JUL 1 0.2 10.3 -10.1 9.2  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 27 35 -8 56  
MONTH TO DATE 854 937 -83 1057  
SINCE DEC 1 854 939 -85 1057  
SINCE JUL 1 1878 1994 -116 1884  
 
COOLING  
TODAY 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)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 9.6  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 75 500 AM  
LOWEST 53 1200 PM  
AVERAGE 64  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 37 70 1876  
MINIMUM TEMPERATURE (F) 24 -3 1918  
 
 
SUNRISE AND SUNSET  
DECEMBER 31 2018......SUNRISE 713 AM EST SUNSET 421 PM EST  
JANUARY 1 2019.......SUNRISE 713 AM EST SUNSET 422 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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