390  
CDUS41 KBOX 142122  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
522 PM EDT FRI MAY 14 2021  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR MAY 14 2021
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1872 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 77 359 PM 86 1879 66 11 69  
MINIMUM 56 510 AM 37 1895 50 6 45  
AVERAGE 67 58 9 57  
 
PRECIPITATION (IN)  
TODAY 0.00 3.77 2006 0.10 -0.10 0.00  
MONTH TO DATE 1.59 1.44 0.15 1.41  
SINCE MAR 1 7.92 9.24 -1.32 9.34  
SINCE JAN 1 12.99 15.84 -2.85 14.03  
 
SNOWFALL (IN)  
TODAY 0.0 0.0 2000 0.0 0.0 0.0  
2001  
2002  
MONTH TO DATE 0.0 0.0 0.0 T  
SINCE MAR 1 0.2 10.6 -10.4 0.7  
SINCE JUL 1 38.6 49.2 -10.6 15.8  
 
DEGREE DAYS  
HEATING  
TODAY 0 8 -8 8  
MONTH TO DATE 111 132 -21 178  
SINCE MAR 1 1235 1456 -221 1497  
SINCE JUL 1 5012 5394 -382 4880  
 
COOLING  
TODAY 2 1 1 0  
MONTH TO DATE 2 6 -4 1  
SINCE MAR 1 2 10 -8 1  
SINCE JAN 1 2 10 -8 1    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 9.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 40 300 AM  
LOWEST 22 300 PM  
AVERAGE 31  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 93 1900  
MINIMUM TEMPERATURE (F) 50 36 1947  
 
SUNRISE AND SUNSET  
MAY 14 2021...........SUNRISE 523 AM EDT SUNSET 758 PM EDT  
MAY 15 2021...........SUNRISE 522 AM EDT SUNSET 759 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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