894  
CDUS41 KBOX 170551  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
140 AM EDT FRI MAY 17 2019  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR MAY 16 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 65 1018 AM 93 1932 66 -1 62  
MINIMUM 50 508 AM 34 1936 50 0 50  
AVERAGE 58 58 0 56  
 
PRECIPITATION (IN)  
YESTERDAY T 4.47 1954 0.11 -0.11 T  
MONTH TO DATE 1.78 1.67 0.11 1.49  
SINCE MAR 1 11.25 9.73 1.52 11.18  
SINCE JAN 1 18.32 16.34 1.98 19.87  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 2001 0.0 0.0 0.0  
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 7 8 -1 9  
MONTH TO DATE 187 157 30 99  
SINCE MAR 1 1381 1496 -115 1535  
SINCE JUL 1 5187 5538 -351 5287  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 0 3 -3 34  
SINCE MAR 1 8 6 2 34  
SINCE JAN 1 8 6 2 34    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION E (110)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (90)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION E (90)  
AVERAGE WIND SPEED 6.4  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 80 500 AM  
LOWEST 52 1000 AM  
AVERAGE 66  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 92 2017  
1977  
MINIMUM TEMPERATURE (F) 50 39 1882  
 
 
SUNRISE AND SUNSET  
MAY 17 2019...........SUNRISE 521 AM EDT SUNSET 801 PM EDT  
MAY 18 2019...........SUNRISE 520 AM EDT SUNSET 802 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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