034  
CDUS41 KBOX 130612  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
211 AM EDT THU SEP 13 2018  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 12 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 70 1029 AM 93 1961 74 -4 86  
MINIMUM 66 1050 PM 43 1875 59 7 61  
AVERAGE 68 66 2 74  
 
PRECIPITATION (IN)  
YESTERDAY 0.26 2.95 1960 0.12 0.14 0.00  
MONTH TO DATE 1.58 1.26 0.32 1.11  
SINCE SEP 1 1.58 1.26 0.32 1.11  
SINCE JAN 1 34.02 29.88 4.14 32.40  
 
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 2 -2 0  
MONTH TO DATE 4 14 -10 17  
SINCE SEP 1 4 14 -10 17  
SINCE JUL 1 4 27 -23 29  
 
COOLING  
YESTERDAY 3 3 0 9  
MONTH TO DATE 100 49 51 40  
SINCE SEP 1 100 49 51 40  
SINCE JAN 1 1057 708 349 769    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION NE (40)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 7.7  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 300 PM  
LOWEST 84 1000 AM  
AVERAGE 89  
   
......................................................
 
 
 
THE BOSTON MA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 93 1957  
MINIMUM TEMPERATURE (F) 59 45 1985  
1911  
 
 
SUNRISE AND SUNSET  
SEPTEMBER 13 2018.....SUNRISE 622 AM EDT SUNSET 657 PM EDT  
SEPTEMBER 14 2018.....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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