343  
CDUS41 KBOX 210531  
CLIBDL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
131 AM EDT SUN SEP 21 2025  
   
...............................  
 
   
..THE HARTFORD CT CLIMATE SUMMARY FOR SEPTEMBER 20 2025  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1904 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 71 312 PM 95 1983 74 -3 76  
MINIMUM 47 1137 PM 30 1979 52 -5 65  
AVERAGE 59 63 -4 71  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 6.10 1938 0.16 -0.16 0.00  
MONTH TO DATE 1.78 2.79 -1.01 0.31  
SINCE SEP 1 1.78 2.79 -1.01 0.31  
SINCE JAN 1 35.09 33.34 1.75 38.43  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 2000 0.0 0.0 0.0  
2001  
2002  
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 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 6 4 2 0  
MONTH TO DATE 25 40 -15 5  
SINCE SEP 1 25 40 -15 5  
SINCE JUL 1 44 48 -4 5  
 
COOLING  
YESTERDAY 0 2 -2 6  
MONTH TO DATE 35 70 -35 72  
SINCE SEP 1 35 70 -35 72  
SINCE JAN 1 806 795 11 1150    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION NE (30)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION N (10)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 4.0  
 
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 1000 PM  
LOWEST 30 400 PM  
AVERAGE 62  
   
......................................................  
 
THE HARTFORD CT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 91 1914  
1965  
MINIMUM TEMPERATURE (F) 52 31 1962  
 
SUNRISE AND SUNSET  
SEPTEMBER 21 2025.....SUNRISE 637 AM EDT SUNSET 649 PM EDT  
SEPTEMBER 22 2025.....SUNRISE 638 AM EDT SUNSET 647 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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