187  
CDUS41 KBOX 152120  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
520 PM EDT WED SEP 15 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 15 2021
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1872 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 86 1246 PM 94 1915 74 12 61  
MINIMUM 68 1234 AM 41 1913 59 9 49  
AVERAGE 77 66 11 55  
 
PRECIPITATION (IN)  
TODAY 0.00 3.48 1904 0.12 -0.12 0.00  
MONTH TO DATE 5.49 1.64 3.85 0.46  
SINCE SEP 1 5.49 1.64 3.85 0.46  
SINCE JAN 1 41.45 29.68 11.77 22.18  
 
SNOWFALL (IN)  
TODAY 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 SEP 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0 T  
 
DEGREE DAYS  
HEATING  
TODAY 0 2 -2 10  
MONTH TO DATE 0 16 -16 15  
SINCE SEP 1 0 16 -16 15  
SINCE JUL 1 9 25 -16 17  
 
COOLING  
TODAY 12 3 9 0  
MONTH TO DATE 102 64 38 62  
SINCE SEP 1 102 64 38 62  
SINCE JAN 1 1078 764 314 889    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 11.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 700 AM  
LOWEST 59 400 PM  
AVERAGE 73  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 73 96 1939  
MINIMUM TEMPERATURE (F) 58 42 1984  
 
SUNRISE AND SUNSET  
SEPTEMBER 15 2021.....SUNRISE 624 AM EDT SUNSET 653 PM EDT  
SEPTEMBER 16 2021.....SUNRISE 625 AM EDT SUNSET 652 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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