785  
CDUS41 KBOX 210636  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
225 AM EDT FRI SEP 21 2018  
 
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 20 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 66 238 PM 97 1983 71 -5 72  
MINIMUM 60 459 AM 42 1979 56 4 63  
1964  
1929  
AVERAGE 63 64 -1 68  
 
PRECIPITATION (IN)  
YESTERDAY T 2.82 1899 0.12 -0.12 0.27  
MONTH TO DATE 3.17 2.19 0.98 1.99  
SINCE SEP 1 3.17 2.19 0.98 1.99  
SINCE JAN 1 35.61 30.81 4.80 33.28  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 2002 0.0 0.0 0.0  
2001  
2000  
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 2 3 -1 0  
MONTH TO DATE 6 35 -29 17  
SINCE SEP 1 6 35 -29 17  
SINCE JUL 1 6 48 -42 29  
 
COOLING  
YESTERDAY 0 2 -2 3  
MONTH TO DATE 139 68 71 73  
SINCE SEP 1 139 68 71 73  
SINCE JAN 1 1096 727 369 802    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION NE (60)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 11.1  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 300 AM  
LOWEST 72 700 PM  
AVERAGE 78  
   
......................................................
 
 
 
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 2018.....SUNRISE 630 AM EDT SUNSET 643 PM EDT  
SEPTEMBER 22 2018.....SUNRISE 631 AM EDT SUNSET 641 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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