501  
CDUS41 KBOX 230557  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
147 AM EDT WED MAY 23 2018  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR MAY 22 2018
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1872 TO 2018  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 67 719 AM 93 1959 68 -1 56  
MINIMUM 54 1159 PM 39 1894 52 2 50  
AVERAGE 61 60 1 53  
 
PRECIPITATION (IN)  
YESTERDAY 0.03 3.23 1920 0.12 -0.09 0.12  
MONTH TO DATE 1.80 2.34 -0.54 2.16  
SINCE MAR 1 11.49 10.40 1.09 12.07  
SINCE JAN 1 20.18 17.01 3.17 19.54  
 
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 24.6 9.8 14.8 11.3  
SINCE JUL 1 59.9 43.9 16.0 47.6  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 4 6 -2 12  
MONTH TO DATE 131 199 -68 232  
SINCE MAR 1 1567 1538 29 1593  
SINCE JUL 1 5319 5580 -261 5132  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 41 9 32 41  
SINCE MAR 1 41 12 29 60  
SINCE JAN 1 41 12 29 60    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION S (180)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 6.7  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 1000 PM  
LOWEST 60 1200 AM  
AVERAGE 75  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 68 93 1964  
MINIMUM TEMPERATURE (F) 52 40 1967  
1882  
1876  
 
 
SUNRISE AND SUNSET  
MAY 23 2018...........SUNRISE 516 AM EDT SUNSET 807 PM EDT  
MAY 24 2018...........SUNRISE 515 AM EDT SUNSET 808 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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