456  
CDUS41 KBOX 192134  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
534 PM EDT SUN SEP 19 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 19 2021
 
 
VALID 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 72 125 PM 92 1983 72 0 60  
MINIMUM 65 726 AM 42 1929 57 8 46  
AVERAGE 69 65 4 53  
 
PRECIPITATION (IN)  
TODAY 0.28 1.21 1936 0.12 0.16 0.00  
MONTH TO DATE 6.14 2.15 3.99 0.46  
SINCE SEP 1 6.14 2.15 3.99 0.46  
SINCE JAN 1 42.10 30.19 11.91 22.18  
 
SNOWFALL (IN)  
TODAY 0.0 0.0 2000 0.0 0.0 0.0  
2001  
2002  
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  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 0 3 -3 12  
MONTH TO DATE 0 25 -25 36  
SINCE SEP 1 0 25 -25 36  
SINCE JUL 1 9 34 -25 38  
 
COOLING  
TODAY 4 2 2 0  
MONTH TO DATE 119 74 45 65  
SINCE SEP 1 119 74 45 65  
SINCE JAN 1 1095 774 321 892    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION NE (30)  
AVERAGE WIND SPEED 10.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 1200 AM  
LOWEST 47 1100 AM  
AVERAGE 67  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 97 1983  
MINIMUM TEMPERATURE (F) 57 42 1929  
1964  
1979  
 
SUNRISE AND SUNSET  
SEPTEMBER 19 2021.....SUNRISE 629 AM EDT SUNSET 646 PM EDT  
SEPTEMBER 20 2021.....SUNRISE 630 AM EDT SUNSET 644 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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