738  
CDUS42 KCHS 180601  
CLICXM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHARLESTON SC  
201 AM EDT THU SEP 18 2025  
   
...............................  
 
...THE DOWNTOWN CHARLESTON SC CLIMATE SUMMARY FOR SEPTEMBER 17 2025...  
 
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)  
YESTERDAY  
MAXIMUM 84 150 PM 94 1896 83 1 79  
MINIMUM 68 540 AM 60 1961 72 -4 66  
1984  
2011  
AVERAGE 76 78 -2 73  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 4.71 1945 0.16 -0.16 0.00  
MONTH TO DATE 0.94 3.10 -2.16 2.10  
SINCE SEP 1 0.94 3.10 -2.16 2.10  
SINCE JAN 1 34.83 32.83 2.00 43.00  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 11 12 -1 8  
MONTH TO DATE 183 235 -52 197  
SINCE SEP 1 183 235 -52 197  
SINCE JAN 1 2278 2096 182 2253    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 5.9  
   
......................................................  
 
THE DOWNTOWN CHARLESTON SC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 98 1931  
MINIMUM TEMPERATURE (F) 72 60 1910  
1984  
 
SUNRISE AND SUNSET  
SEPTEMBER 18 2025.....SUNRISE 705 AM EDT SUNSET 721 PM EDT  
SEPTEMBER 19 2025.....SUNRISE 706 AM EDT SUNSET 720 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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