332  
CDUS41 KBOX 210526  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
126 AM EDT SAT APR 21 2018  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR APRIL 20 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 53 349 PM 89 1976 57 -4 55  
1941  
1927  
MINIMUM 36 537 AM 21 1897 42 -6 44  
AVERAGE 45 50 -5 50  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.87 1874 0.11 -0.11 0.01  
MONTH TO DATE 2.90 2.61 0.29 3.70  
SINCE MAR 1 7.97 6.93 1.04 7.88  
SINCE JAN 1 16.66 13.54 3.12 15.35  
 
SNOWFALL (IN)  
YESTERDAY 0.0 1.0 1904 0.1 -0.1 0.0  
MONTH TO DATE 1.3 1.8 -0.5 1.2  
SINCE MAR 1 24.6 9.6 15.0 11.3  
SINCE JUL 1 59.9 43.7 16.2 47.6  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 20 15 5 15  
MONTH TO DATE 458 373 85 293  
SINCE MAR 1 1311 1202 109 1244  
SINCE JUL 1 5063 5244 -181 4783  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 10  
SINCE MAR 1 0 0 0 10  
SINCE JAN 1 0 0 0 10    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 16 RESULTANT WIND DIRECTION NW (310)  
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 16.1  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 75 500 AM  
LOWEST 38 200 PM  
AVERAGE 57  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 58 88 1957  
MINIMUM TEMPERATURE (F) 42 21 1875  
 
 
SUNRISE AND SUNSET  
APRIL 21 2018.........SUNRISE 554 AM EDT SUNSET 733 PM EDT  
APRIL 22 2018.........SUNRISE 552 AM EDT SUNSET 734 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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