675  
CXUS51 KBOX 092140  
CLMBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
540 PM EDT TUE SEP 09 2025  
   
...............................  
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2025  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1872 TO 2025  
 
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S  
VALUE DATE(S) VALUE FROM VALUE  
NORMAL    
..........................................................  
 
TEMPERATURE (F)  
RECORD  
HIGH 102 08/02/1975  
LOW 46 08/25/1940  
HIGHEST 92 08/17 95  
LOWEST 56 08/20 58  
AVG. MAXIMUM 78.4 80.4 -2.0  
AVG. MINIMUM 62.9 65.1 -2.2  
MEAN 70.6 72.7 -2.1  
DAYS MAX >= 90 3 3.8 -0.8  
DAYS MAX <= 32 0 0.0 0.0  
DAYS MIN <= 32 0 0.0 0.0  
DAYS MIN <= 0 0 0.0 0.0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 17.09 1955  
MINIMUM 0.39 1883  
TOTALS 0.83 3.23 -2.40  
DAILY AVG. 0.03 0.10 -0.07  
DAYS >= .01 4 9.0 -5.0  
DAYS >= .10 3 5.4 -2.4  
DAYS >= .50 0 2.2 -2.2  
DAYS >= 1.00 0 0.8 -0.8  
GREATEST  
24 HR. TOTAL 0.28 08/01 TO 08/01  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL T 2020  
TOTALS 0.0 0.0 0.0  
LIQUID EQUIV 0.00  
SINCE 7/1 0.0 0.0 0.0  
DAYS >= TRACE 0 0.0 0.0  
DAYS >= 1.0 0 0.0 0.0  
GREATEST  
24 HR TOTAL 0.0  
 
DEGREE DAYS  
HEATING TOTAL 7 5 2  
SINCE 7/1 7 4 3  
COOLING TOTAL 187 245 -58  
SINCE 1/1 757 700 57    
..........................................................  
 
WIND (MPH)  
AVERAGE WIND SPEED 9.3  
RESULTANT WIND SPEED/DIRECTION 2/150  
HIGHEST WIND SPEED/DIRECTION 30/040 DATE 08/14  
HIGHEST GUST SPEED/DIRECTION MM DATE MM  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.44  
NUMBER OF DAYS FAIR 13  
NUMBER OF DAYS PC 14  
NUMBER OF DAYS CLOUDY 4  
 
AVERAGE RH (PERCENT) 65  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 2 MIXED PRECIP 0  
HEAVY RAIN 1 RAIN 3  
LIGHT RAIN 6 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 0  
HEAVY SNOW 0 SNOW 0  
LIGHT SNOW 0 SLEET 0  
FOG 6 FOG W/VIS <= 1/4 MILE 1  
HAZE 1  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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