247  
CDUS41 KBOX 110545  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
145 AM EDT MON SEP 11 2023  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 10 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 74 846 AM 95 1931 75 -1 80  
MINIMUM 68 1159 PM 41 1883 60 8 66  
AVERAGE 71 68 3 73  
 
PRECIPITATION (IN)  
YESTERDAY 0.20 4.71 1999 0.11 0.09 0.00  
MONTH TO DATE 0.34 1.06 -0.72 0.97  
SINCE SEP 1 0.34 1.06 -0.72 0.97  
SINCE JAN 1 36.90 29.10 7.80 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 8 -7 3  
SINCE SEP 1 1 8 -7 3  
SINCE JUL 1 1 17 -16 3  
 
COOLING  
YESTERDAY 6 4 2 8  
MONTH TO DATE 102 48 54 30  
SINCE SEP 1 102 48 54 30  
SINCE JAN 1 800 748 52 980    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION E (70)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 5.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 600 AM  
LOWEST 87 600 PM  
AVERAGE 94  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 99 1983  
MINIMUM TEMPERATURE (F) 60 40 1917  
 
SUNRISE AND SUNSET  
SEPTEMBER 11 2023.....SUNRISE 620 AM EDT SUNSET 701 PM EDT  
SEPTEMBER 12 2023.....SUNRISE 621 AM EDT SUNSET 659 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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