740  
CDUS42 KCHS 172207  
CLICXM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHARLESTON SC  
507 PM EST WED DEC 17 2025  
   
...............................  
 
   
..THE DOWNTOWN CHARLESTON SC CLIMATE SUMMARY FOR DECEMBER 17 2025  
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1870 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 63 220 PM 78 1924 61 2 64  
MINIMUM 45 540 AM 20 1943 47 -2 57  
AVERAGE 54 54 0 61  
 
PRECIPITATION (IN)  
TODAY 0.00 3.92 2023 0.09 -0.09 0.01  
MONTH TO DATE 1.77 1.65 0.12 0.34  
SINCE DEC 1 1.77 1.65 0.12 0.34  
SINCE JAN 1 41.65 43.00 -1.35 47.39  
 
DEGREE DAYS  
HEATING  
TODAY 11 12 -1 4  
MONTH TO DATE 259 175 84 207  
SINCE DEC 1 259 175 84 207  
SINCE JUL 1 438 390 48 313  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 1  
SINCE DEC 1 0 0 0 1  
SINCE JAN 1 2598 2441 157 2706    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 1.6  
   
......................................................  
 
THE DOWNTOWN CHARLESTON SC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 61 78 1933  
2008  
MINIMUM TEMPERATURE (F) 46 24 1901  
 
SUNRISE AND SUNSET  
DECEMBER 17 2025......SUNRISE 716 AM EST SUNSET 516 PM EST  
DECEMBER 18 2025......SUNRISE 717 AM EST SUNSET 516 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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