956  
CDUS41 KBOX 120600  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
150 AM EDT SUN MAY 12 2019  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR MAY 11 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 70 454 PM 91 1993 64 6 70  
MINIMUM 54 1159 PM 33 1900 48 6 52  
AVERAGE 62 56 6 61  
 
PRECIPITATION (IN)  
YESTERDAY T 1.42 1989 0.11 -0.11 0.00  
MONTH TO DATE 0.41 1.16 -0.75 0.28  
SINCE MAR 1 9.88 9.22 0.66 9.97  
SINCE JAN 1 16.95 15.83 1.12 18.66  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 1945 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 3 9 -6 4  
MONTH TO DATE 119 116 3 56  
SINCE MAR 1 1313 1455 -142 1492  
SINCE JUL 1 5119 5497 -378 5244  
 
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 10 RESULTANT WIND DIRECTION NW (320)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 10.9  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 1200 AM  
LOWEST 23 400 PM  
AVERAGE 54  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 65 88 2001  
1991  
MINIMUM TEMPERATURE (F) 49 33 1907  
 
 
SUNRISE AND SUNSET  
MAY 12 2019...........SUNRISE 526 AM EDT SUNSET 755 PM EDT  
MAY 13 2019...........SUNRISE 525 AM EDT SUNSET 757 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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