179  
CDUS41 KBOX 131836  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
235 PM EDT MON MAY 13 2019  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR MAY 12 2019
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1872 TO 2019  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 55 1233 AM 88 2001 65 -10 53  
1991  
MINIMUM 43 321 PM 33 1907 49 -6 49  
AVERAGE 49 57 -8 51  
 
PRECIPITATION (IN)  
YESTERDAY 0.39 1.42 1888 0.10 0.29 0.21  
MONTH TO DATE 0.80 1.26 -0.46 0.49  
SINCE MAR 1 10.27 9.32 0.95 10.18  
SINCE JAN 1 17.34 15.93 1.41 18.87  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 2018 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.1 -0.1 0.0  
SINCE MAR 1 13.5 9.8 3.7 24.6  
SINCE JUL 1 27.4 43.9 -16.5 59.9  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 16 9 7 14  
MONTH TO DATE 135 125 10 70  
SINCE MAR 1 1329 1464 -135 1506  
SINCE JUL 1 5135 5506 -371 5258  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 27  
SINCE MAR 1 8 3 5 27  
SINCE JAN 1 8 3 5 27    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION E (90)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 6.4  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 1200 PM  
LOWEST 41 1200 AM  
AVERAGE 62  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 65 87 1947  
MINIMUM TEMPERATURE (F) 49 38 1882  
1878  
 
 
SUNRISE AND SUNSET  
MAY 13 2019...........SUNRISE 525 AM EDT SUNSET 757 PM EDT  
MAY 14 2019...........SUNRISE 524 AM EDT SUNSET 758 PM EDT  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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