783  
CDUS41 KBOX 122123  
CLIBOS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
523 PM EDT FRI MAY 12 2023  
   
...............................
 
 
   
..THE BOSTON MA CLIMATE SUMMARY FOR MAY 12 2023
 
 
VALID AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 85 355 PM 88 1991 65 20 60  
2001  
MINIMUM 57 126 AM 33 1907 49 8 51  
AVERAGE 71 57 14 56  
 
PRECIPITATION (IN)  
TODAY T 1.42 1888 0.09 -0.09 0.00  
MONTH TO DATE 0.28 1.24 -0.96 0.37  
SINCE MAR 1 7.67 9.04 -1.37 5.62  
SINCE JAN 1 14.26 15.64 -1.38 12.56  
 
SNOWFALL (IN)  
TODAY 0.0 0.0 2000 0.0 0.0 0.0  
2001  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE MAR 1 0.9 10.6 -9.7 2.1  
SINCE JUL 1 12.4 49.2 -36.8 54.0  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 0 8 -8 9  
MONTH TO DATE 83 116 -33 151  
SINCE MAR 1 1251 1440 -189 1315  
SINCE JUL 1 4567 5378 -811 4937  
 
COOLING  
TODAY 6 1 5 0  
MONTH TO DATE 15 4 11 0  
SINCE MAR 1 20 8 12 0  
SINCE JAN 1 20 8 12 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 9.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 64 400 AM  
LOWEST 25 400 PM  
AVERAGE 45  
   
......................................................
 
 
THE BOSTON MA CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 87 1947  
MINIMUM TEMPERATURE (F) 50 37 2020  
 
SUNRISE AND SUNSET  
MAY 12 2023...........SUNRISE 526 AM EDT SUNSET 756 PM EDT  
MAY 13 2023...........SUNRISE 525 AM EDT SUNSET 757 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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