837  
CDUS41 KBOX 212052  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
452 PM EDT THU OCT 21 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR OCTOBER 21 2021
 
 
VALID AS OF 0400 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 75 259 PM 82 1920 60 15 65  
MINIMUM 58 652 AM 30 1974 46 12 56  
AVERAGE 67 53 14 61  
 
PRECIPITATION (IN)  
TODAY 0.00 1.78 1944 0.13 -0.13 0.06  
1996  
MONTH TO DATE 1.84 2.72 -0.88 3.53  
SINCE SEP 1 9.31 6.28 3.03 4.50  
SINCE JAN 1 45.27 34.32 10.95 26.22  
 
SNOWFALL (IN)  
TODAY 0.0 T 1964 0.0 0.0 0.0  
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  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 0 12 -12 4  
MONTH TO DATE 52 187 -135 156  
SINCE SEP 1 64 258 -194 226  
SINCE JUL 1 73 267 -194 228  
 
COOLING  
TODAY 2 0 2 0  
MONTH TO DATE 14 6 8 3  
SINCE SEP 1 170 97 73 97  
SINCE JAN 1 1146 797 349 924    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 7.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 69 700 AM  
LOWEST 41 1200 PM  
AVERAGE 55  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 60 83 1979  
MINIMUM TEMPERATURE (F) 46 28 1940  
 
SUNRISE AND SUNSET  
OCTOBER 21 2021.......SUNRISE 704 AM EDT SUNSET 552 PM EDT  
OCTOBER 22 2021.......SUNRISE 706 AM EDT SUNSET 551 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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