537  
CDUS41 KBOX 130530  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
130 AM EDT WED SEP 13 2023  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 12 2023
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1872 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 77 336 PM 93 1961 75 2 76  
MINIMUM 67 1244 AM 43 1875 60 7 66  
AVERAGE 72 67 5 71  
 
PRECIPITATION (IN)  
YESTERDAY 0.09 2.95 1960 0.11 -0.02 T  
MONTH TO DATE 0.82 1.28 -0.46 0.97  
SINCE SEP 1 0.82 1.28 -0.46 0.97  
SINCE JAN 1 37.38 29.32 8.06 18.90  
 
SNOWFALL (IN)  
YESTERDAY 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 0.0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 1 10 -9 3  
SINCE SEP 1 1 10 -9 3  
SINCE JUL 1 1 19 -18 3  
 
COOLING  
YESTERDAY 7 3 4 6  
MONTH TO DATE 114 55 59 46  
SINCE SEP 1 114 55 59 46  
SINCE JAN 1 812 755 57 996    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION E (110)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION E (110)  
AVERAGE WIND SPEED 5.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 1100 AM  
LOWEST 76 300 PM  
AVERAGE 87  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 93 1957  
MINIMUM TEMPERATURE (F) 59 45 1911  
1985  
 
SUNRISE AND SUNSET  
SEPTEMBER 13 2023.....SUNRISE 622 AM EDT SUNSET 658 PM EDT  
SEPTEMBER 14 2023.....SUNRISE 623 AM EDT SUNSET 656 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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