662  
CDUS41 KBOX 200633  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
231 AM EDT MON MAY 20 2019  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR MAY 19 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 73 317 PM 90 2017 67 6 55  
1986  
1949  
MINIMUM 53 335 AM 38 1882 51 2 46  
AVERAGE 63 59 4 51  
 
PRECIPITATION (IN)  
YESTERDAY 0.22 1.55 1900 0.11 0.11 0.20  
MONTH TO DATE 2.24 1.99 0.25 1.69  
SINCE MAR 1 11.71 10.05 1.66 11.38  
SINCE JAN 1 18.78 16.66 2.12 20.07  
 
SNOWFALL (IN)  
YESTERDAY 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  
YESTERDAY 2 7 -5 14  
MONTH TO DATE 199 179 20 126  
SINCE MAR 1 1393 1518 -125 1562  
SINCE JUL 1 5199 5560 -361 5314  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 0 6 -6 34  
SINCE MAR 1 8 9 -1 34  
SINCE JAN 1 8 9 -1 34    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 14 RESULTANT WIND DIRECTION S (200)  
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 14.6  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 81 1100 PM  
LOWEST 52 1000 AM  
AVERAGE 67  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 67 91 1996  
MINIMUM TEMPERATURE (F) 51 40 1892  
 
 
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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