373  
CDUS41 KBOX 160540  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
130 AM EDT THU MAY 16 2019  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR MAY 15 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 62 539 PM 93 1900 66 -4 85  
MINIMUM 45 504 AM 36 1947 50 -5 58  
AVERAGE 54 58 -4 72  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 1.73 1978 0.10 -0.09 1.00  
MONTH TO DATE 1.78 1.56 0.22 1.49  
SINCE MAR 1 11.25 9.62 1.63 11.18  
SINCE JAN 1 18.32 16.23 2.09 19.87  
 
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 11 8 3 0  
MONTH TO DATE 180 149 31 90  
SINCE MAR 1 1374 1488 -114 1526  
SINCE JUL 1 5180 5530 -350 5278  
 
COOLING  
YESTERDAY 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)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION NW (310)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 9.1  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 100 AM  
LOWEST 39 600 PM  
AVERAGE 61  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 93 1932  
MINIMUM TEMPERATURE (F) 50 34 1936  
 
 
SUNRISE AND SUNSET  
MAY 16 2019...........SUNRISE 522 AM EDT SUNSET 800 PM EDT  
MAY 17 2019...........SUNRISE 521 AM EDT SUNSET 801 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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