550  
CDUS41 KBOX 210525  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
125 AM EDT THU OCT 21 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR OCTOBER 20 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 72 MM 79 1969 61 11 67  
MINIMUM 54 MM 32 1900 46 8 49  
1972  
1974  
AVERAGE 63 53 10 58  
 
PRECIPITATION (IN)  
YESTERDAY 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)  
YESTERDAY 0.0 0.0 2007 0.1 -0.1 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  
YESTERDAY 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  
YESTERDAY 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)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION W (270)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 10.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 900 PM  
LOWEST 46 1200 PM  
AVERAGE 68  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 60 82 1920  
MINIMUM TEMPERATURE (F) 46 30 1974  
 
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.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab MA Page
The Nexlab RI Page
The Nexlab NH Page
The Nexlab CT Page Main Text Page