642  
CDUS41 KBOX 112131  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
531 PM EDT SAT MAY 11 2019  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR MAY 11 2019
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 70 345 PM 91 1993 64 6 70  
MINIMUM 58 627 AM 33 1900 48 10 52  
AVERAGE 64 56 8 61  
 
PRECIPITATION (IN)  
TODAY 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)  
TODAY 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  
TODAY 1 9 -8 4  
MONTH TO DATE 117 116 1 56  
SINCE MAR 1 1311 1455 -144 1492  
SINCE JUL 1 5117 5497 -380 5244  
 
COOLING  
TODAY 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)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 12.3  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 1200 AM  
LOWEST 23 400 PM  
AVERAGE 54  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 65 88 2001  
1991  
MINIMUM TEMPERATURE (F) 49 33 1907  
 
 
SUNRISE AND SUNSET  
MAY 11 2019...........SUNRISE 527 AM EDT SUNSET 754 PM EDT  
MAY 12 2019...........SUNRISE 526 AM EDT SUNSET 755 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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