725  
CDUS41 KBOX 130613  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
213 AM EDT MON SEP 13 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 12 2021
 
 
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)  
YESTERDAY  
MAXIMUM 83 358 PM 93 1961 75 8 67  
MINIMUM 65 1258 AM 43 1875 60 5 53  
AVERAGE 74 67 7 60  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.95 1960 0.11 -0.11 0.00  
MONTH TO DATE 5.43 1.28 4.15 0.46  
SINCE SEP 1 5.43 1.28 4.15 0.46  
SINCE JAN 1 41.39 29.32 12.07 22.18  
 
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 SEP 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0 T  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 5  
MONTH TO DATE 0 10 -10 5  
SINCE SEP 1 0 10 -10 5  
SINCE JUL 1 9 19 -10 7  
 
COOLING  
YESTERDAY 9 3 6 0  
MONTH TO DATE 78 55 23 61  
SINCE SEP 1 78 55 23 61  
SINCE JAN 1 1054 755 299 888    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 15 RESULTANT WIND DIRECTION SW (230)  
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION SW (240)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 15.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 81 100 AM  
LOWEST 53 1200 PM  
AVERAGE 67  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 93 1957  
MINIMUM TEMPERATURE (F) 59 45 1911  
1985  
 
SUNRISE AND SUNSET  
SEPTEMBER 13 2021.....SUNRISE 622 AM EDT SUNSET 657 PM EDT  
SEPTEMBER 14 2021.....SUNRISE 623 AM EDT SUNSET 655 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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