967  
CDUS41 KBOX 210646  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
245 AM EDT SAT SEP 21 2019  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 20 2019
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1872 TO 2019  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 79 1253 PM 97 1983 71 8 66  
MINIMUM 52 620 AM 42 1979 56 -4 60  
1964  
1929  
AVERAGE 66 64 2 63  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.82 1899 0.12 -0.12 T  
MONTH TO DATE 1.75 2.19 -0.44 3.17  
SINCE SEP 1 1.75 2.19 -0.44 3.17  
SINCE JAN 1 36.08 30.81 5.27 35.61  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 2018 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 0.0  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 3 -3 2  
MONTH TO DATE 20 35 -15 6  
SINCE SEP 1 20 35 -15 6  
SINCE JUL 1 20 48 -28 6  
 
COOLING  
YESTERDAY 1 2 -1 0  
MONTH TO DATE 64 68 -4 139  
SINCE SEP 1 64 68 -4 139  
SINCE JAN 1 942 727 215 1096    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION W (250)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 6.2  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77 1200 AM  
LOWEST 29 1200 PM  
AVERAGE 53  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 94 1895  
MINIMUM TEMPERATURE (F) 56 40 1929  
1904  
 
 
SUNRISE AND SUNSET  
SEPTEMBER 21 2019.....SUNRISE 630 AM EDT SUNSET 644 PM EDT  
SEPTEMBER 22 2019.....SUNRISE 631 AM EDT SUNSET 642 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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