078  
CDUS41 KBOX 180539  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
139 AM EDT MON OCT 18 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR OCTOBER 17 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 65 227 PM 89 1947 62 3 58  
MINIMUM 52 1159 PM 27 1886 47 5 42  
AVERAGE 59 54 5 50  
 
PRECIPITATION (IN)  
YESTERDAY 0.31 1.18 1989 0.13 0.18 1.16  
MONTH TO DATE 1.84 2.18 -0.34 3.47  
SINCE SEP 1 9.31 5.74 3.57 4.44  
SINCE JAN 1 45.27 33.78 11.49 26.16  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 1970 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 6 11 -5 15  
MONTH TO DATE 30 141 -111 115  
SINCE SEP 1 42 212 -170 185  
SINCE JUL 1 51 221 -170 187  
 
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 13 RESULTANT WIND DIRECTION W (290)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 12.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 200 AM  
LOWEST 41 200 PM  
AVERAGE 67  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 61 82 1947  
MINIMUM TEMPERATURE (F) 47 31 1883  
1939  
 
SUNRISE AND SUNSET  
OCTOBER 18 2021.......SUNRISE 701 AM EDT SUNSET 557 PM EDT  
OCTOBER 19 2021.......SUNRISE 702 AM EDT SUNSET 555 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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