610  
CDUS41 KBOX 220531  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
131 AM EDT WED SEP 22 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 21 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 73 345 PM 94 1895 71 2 61  
MINIMUM 57 555 AM 40 1904 56 1 45  
1929  
AVERAGE 65 64 1 53  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.77 1961 0.13 -0.13 0.00  
MONTH TO DATE 6.14 2.41 3.73 0.46  
SINCE SEP 1 6.14 2.41 3.73 0.46  
SINCE JAN 1 42.10 30.45 11.65 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 3 -3 12  
MONTH TO DATE 0 31 -31 61  
SINCE SEP 1 0 31 -31 61  
SINCE JUL 1 9 40 -31 63  
 
COOLING  
YESTERDAY 0 2 -2 0  
MONTH TO DATE 117 78 39 65  
SINCE SEP 1 117 78 39 65  
SINCE JAN 1 1093 778 315 892    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION E (100)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 6.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 900 PM  
LOWEST 70 800 AM  
AVERAGE 79  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 94 1895  
MINIMUM TEMPERATURE (F) 56 35 1904  
 
SUNRISE AND SUNSET  
SEPTEMBER 22 2021.....SUNRISE 632 AM EDT SUNSET 641 PM EDT  
SEPTEMBER 23 2021.....SUNRISE 633 AM EDT SUNSET 639 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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