797  
CDUS41 KBOX 170527  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
127 AM EDT SUN AUG 17 2025  
   
...............................  
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR AUGUST 16 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 79 205 PM 97 1944 81 -2 72  
MINIMUM 63 522 AM 47 1880 65 -2 64  
AVERAGE 71 73 -2 68  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.77 1872 0.11 -0.11 0.00  
MONTH TO DATE 0.52 1.75 -1.23 3.55  
SINCE JUN 1 4.85 8.91 -4.06 8.98  
SINCE JAN 1 24.64 26.56 -1.92 33.99  
 
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 0 0 0 0  
MONTH TO DATE 0 0 0 1  
SINCE JUN 1 44 54 -10 8  
SINCE JUL 1 0 4 -4 1  
 
COOLING  
YESTERDAY 6 8 -2 3  
MONTH TO DATE 121 139 -18 160  
SINCE JUN 1 662 561 101 698  
SINCE JAN 1 691 594 97 744    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION SE (130)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION E (100)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION E (90)  
AVERAGE WIND SPEED 9.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 600 AM  
LOWEST 41 200 PM  
AVERAGE 64  
   
......................................................  
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 81 97 1944  
MINIMUM TEMPERATURE (F) 65 51 1934  
 
SUNRISE AND SUNSET  
AUGUST 17 2025........SUNRISE 554 AM EDT SUNSET 742 PM EDT  
AUGUST 18 2025........SUNRISE 555 AM EDT SUNSET 740 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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