518  
CDUS41 KBOX 140539  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
139 AM EDT TUE SEP 14 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 13 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 82 305 PM 93 1957 74 8 75  
MINIMUM 66 1133 PM 45 1911 59 7 55  
1985  
AVERAGE 74 67 7 65  
 
PRECIPITATION (IN)  
YESTERDAY 0.06 2.30 1918 0.12 -0.06 0.00  
1987  
MONTH TO DATE 5.49 1.40 4.09 0.46  
SINCE SEP 1 5.49 1.40 4.09 0.46  
SINCE JAN 1 41.45 29.44 12.01 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 2 -2 0  
MONTH TO DATE 0 12 -12 5  
SINCE SEP 1 0 12 -12 5  
SINCE JUL 1 9 21 -12 7  
 
COOLING  
YESTERDAY 9 3 6 0  
MONTH TO DATE 87 58 29 61  
SINCE SEP 1 87 58 29 61  
SINCE JAN 1 1063 758 305 888    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION W (290)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 9.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 600 AM  
LOWEST 37 400 PM  
AVERAGE 61  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 92 1915  
1931  
MINIMUM TEMPERATURE (F) 59 40 1884  
 
SUNRISE AND SUNSET  
SEPTEMBER 14 2021.....SUNRISE 623 AM EDT SUNSET 655 PM EDT  
SEPTEMBER 15 2021.....SUNRISE 624 AM EDT SUNSET 653 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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