705  
CDUS41 KBOX 152121  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
521 PM EDT WED MAY 15 2019  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR MAY 15 2019
 
 
VALID 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 60 359 PM 93 1900 66 -6 85  
MINIMUM 45 504 AM 36 1947 50 -5 58  
AVERAGE 53 58 -5 72  
 
PRECIPITATION (IN)  
TODAY T 1.73 1978 0.10 -0.10 1.00  
MONTH TO DATE 1.77 1.56 0.21 1.49  
SINCE MAR 1 11.24 9.62 1.62 11.18  
SINCE JAN 1 18.31 16.23 2.08 19.87  
 
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 12 8 4 0  
MONTH TO DATE 181 149 32 90  
SINCE MAR 1 1375 1488 -113 1526  
SINCE JUL 1 5181 5530 -349 5278  
 
COOLING  
TODAY 0 1 -1 7  
MONTH TO DATE 0 2 -2 34  
SINCE MAR 1 8 5 3 34  
SINCE JAN 1 8 5 3 34    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 10.6  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 100 AM  
LOWEST 40 400 PM  
AVERAGE 62  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 93 1932  
MINIMUM TEMPERATURE (F) 50 34 1936  
 
 
SUNRISE AND SUNSET  
MAY 15 2019...........SUNRISE 523 AM EDT SUNSET 759 PM EDT  
MAY 16 2019...........SUNRISE 522 AM EDT SUNSET 800 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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