680  
CDUS41 KBOX 202121  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
521 PM EDT WED OCT 20 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR OCTOBER 20 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 72 202 PM 79 1969 61 11 67  
MINIMUM 54 1256 AM 32 1900 46 8 49  
1972  
1974  
AVERAGE 63 53 10 58  
 
PRECIPITATION (IN)  
TODAY 0.00 6.11 1996 0.14 -0.14 0.00  
MONTH TO DATE 1.84 2.59 -0.75 3.47  
SINCE SEP 1 9.31 6.15 3.16 4.44  
SINCE JAN 1 45.27 34.19 11.08 26.16  
 
SNOWFALL (IN)  
TODAY MM 0.0 2007 0.1 MM 0.0  
2008  
2009  
MONTH TO DATE 0.0 0.1 -0.1 0.0  
SINCE SEP 1 0.0 0.1 -0.1 0.0  
SINCE JUL 1 0.0 0.1 -0.1 T  
 
DEGREE DAYS  
HEATING  
TODAY 2 12 -10 7  
MONTH TO DATE 52 175 -123 152  
SINCE SEP 1 64 246 -182 222  
SINCE JUL 1 73 255 -182 224  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 12 6 6 3  
SINCE SEP 1 168 97 71 97  
SINCE JAN 1 1144 797 347 924    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 11.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 72 400 PM  
LOWEST 46 1200 PM  
AVERAGE 59  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 60 82 1920  
MINIMUM TEMPERATURE (F) 46 30 1974  
 
SUNRISE AND SUNSET  
OCTOBER 20 2021.......SUNRISE 703 AM EDT SUNSET 554 PM EDT  
OCTOBER 21 2021.......SUNRISE 704 AM EDT SUNSET 552 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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