525  
CDUS41 KBOX 190526  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
126 AM EDT TUE OCT 19 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR OCTOBER 18 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 62 206 PM 82 1947 61 1 58  
MINIMUM 47 1154 PM 31 1883 47 0 40  
1939  
AVERAGE 55 54 1 49  
 
PRECIPITATION (IN)  
YESTERDAY T 3.13 1932 0.14 -0.14 0.00  
MONTH TO DATE 1.84 2.32 -0.48 3.47  
SINCE SEP 1 9.31 5.88 3.43 4.44  
SINCE JAN 1 45.27 33.92 11.35 26.16  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.1 2009 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 10 11 -1 16  
MONTH TO DATE 40 152 -112 131  
SINCE SEP 1 52 223 -171 201  
SINCE JUL 1 61 232 -171 203  
 
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 14 RESULTANT WIND DIRECTION W (290)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 14.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77 200 AM  
LOWEST 35 200 PM  
AVERAGE 56  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 61 84 1945  
MINIMUM TEMPERATURE (F) 46 28 1922  
 
SUNRISE AND SUNSET  
OCTOBER 19 2021.......SUNRISE 702 AM EDT SUNSET 555 PM EDT  
OCTOBER 20 2021.......SUNRISE 703 AM EDT SUNSET 554 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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