379  
CDUS41 KBOX 202150  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
540 PM EDT MON MAY 20 2019  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR MAY 20 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 88 233 PM 91 1996 67 21 81  
MINIMUM 66 1228 AM 40 1892 51 15 54  
AVERAGE 77 59 18 68  
 
PRECIPITATION (IN)  
TODAY 0.13 1.23 1969 0.12 0.01 0.08  
MONTH TO DATE 2.37 2.11 0.26 1.77  
SINCE MAR 1 11.84 10.17 1.67 11.46  
SINCE JAN 1 18.91 16.78 2.13 20.15  
 
SNOWFALL (IN)  
TODAY 0.0 0.0 2002 0.0 0.0 0.0  
2001  
2000  
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 0 7 -7 0  
MONTH TO DATE 199 186 13 126  
SINCE MAR 1 1393 1525 -132 1562  
SINCE JUL 1 5199 5567 -368 5314  
 
COOLING  
TODAY 12 1 11 3  
MONTH TO DATE 12 7 5 37  
SINCE MAR 1 20 10 10 37  
SINCE JAN 1 20 10 10 37    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 13.9  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
THUNDERSTORM  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 100 AM  
LOWEST 42 200 PM  
AVERAGE 65  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 68 93 1921  
MINIMUM TEMPERATURE (F) 51 41 1907  
 
 
SUNRISE AND SUNSET  
MAY 20 2019...........SUNRISE 518 AM EDT SUNSET 804 PM EDT  
MAY 21 2019...........SUNRISE 517 AM EDT SUNSET 805 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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