236  
CDUS41 KBOX 170915  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
514 AM EDT MON SEP 17 2018  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 16 2018
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1872 TO 2018  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 81 101 PM 96 1939 72 9 73  
MINIMUM 63 547 AM 42 1984 57 6 62  
AVERAGE 72 65 7 68  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 5.63 1933 0.12 -0.12 0.00  
MONTH TO DATE 2.02 1.72 0.30 1.68  
SINCE SEP 1 2.02 1.72 0.30 1.68  
SINCE JAN 1 34.46 30.34 4.12 32.97  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 2017 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 0  
MONTH TO DATE 4 23 -19 17  
SINCE SEP 1 4 23 -19 17  
SINCE JUL 1 4 36 -32 29  
 
COOLING  
YESTERDAY 7 2 5 3  
MONTH TO DATE 118 60 58 67  
SINCE SEP 1 118 60 58 67  
SINCE JAN 1 1075 719 356 796    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION SE (150)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION E (100)  
AVERAGE WIND SPEED 6.9  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 1200 AM  
LOWEST 49 400 PM  
AVERAGE 71  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 91 1915  
MINIMUM TEMPERATURE (F) 57 44 2013  
 
 
SUNRISE AND SUNSET  
SEPTEMBER 17 2018.....SUNRISE 626 AM EDT SUNSET 650 PM EDT  
SEPTEMBER 18 2018.....SUNRISE 627 AM EDT SUNSET 649 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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