930  
CDUS41 KBOX 190549  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
149 AM EDT TUE AUG 19 2025  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR AUGUST 18 2025
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1872 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 68 1223 AM 95 2002 80 -12 69  
2009  
MINIMUM 60 936 PM 53 1918 65 -5 65  
AVERAGE 64 73 -9 67  
 
PRECIPITATION (IN)  
YESTERDAY T 4.88 1955 0.10 -0.10 0.03  
MONTH TO DATE 0.52 1.95 -1.43 3.58  
SINCE JUN 1 4.85 9.11 -4.26 9.01  
SINCE JAN 1 24.64 26.76 -2.12 34.02  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 2000 0.0 0.0 0.0  
2001  
2002  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE JUN 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0 0.0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 1 0 1 0  
MONTH TO DATE 1 0 1 1  
SINCE JUN 1 45 54 -9 8  
SINCE JUL 1 1 4 -3 1  
 
COOLING  
YESTERDAY 0 8 -8 2  
MONTH TO DATE 136 155 -19 164  
SINCE JUN 1 677 577 100 702  
SINCE JAN 1 706 610 96 748    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 11 RESULTANT WIND DIRECTION NE (60)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 12.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 1200 AM  
LOWEST 47 1100 AM  
AVERAGE 67  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 80 95 2019  
MINIMUM TEMPERATURE (F) 65 51 1882  
 
SUNRISE AND SUNSET  
AUGUST 19 2025........SUNRISE 556 AM EDT SUNSET 739 PM EDT  
AUGUST 20 2025........SUNRISE 557 AM EDT SUNSET 737 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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