125  
CDUS41 KBOX 110527  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
127 AM EDT MON OCT 11 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR OCTOBER 10 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 66 1214 PM 87 1939 64 2 78  
MINIMUM 61 430 AM 32 1979 49 12 54  
AVERAGE 64 57 7 66  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.30 1971 0.13 -0.13 0.00  
MONTH TO DATE 1.51 1.28 0.23 0.04  
SINCE SEP 1 8.98 4.84 4.14 1.01  
SINCE JAN 1 44.94 32.88 12.06 22.73  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.2 1979 0.0 0.0 0.0  
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 1 9 -8 0  
MONTH TO DATE 24 72 -48 58  
SINCE SEP 1 36 143 -107 128  
SINCE JUL 1 45 152 -107 130  
 
COOLING  
YESTERDAY 0 0 0 1  
MONTH TO DATE 0 6 -6 3  
SINCE SEP 1 156 97 59 97  
SINCE JAN 1 1132 797 335 924    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION E (80)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (100)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION E (110)  
AVERAGE WIND SPEED 10.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 81 700 AM  
LOWEST 68 1000 AM  
AVERAGE 75  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 64 82 1955  
MINIMUM TEMPERATURE (F) 49 32 1881  
1979  
 
SUNRISE AND SUNSET  
OCTOBER 11 2021.......SUNRISE 653 AM EDT SUNSET 608 PM EDT  
OCTOBER 12 2021.......SUNRISE 654 AM EDT SUNSET 607 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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