024  
CDUS42 KCHS 202107  
CLICXM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHARLESTON SC  
507 PM EDT WED MAY 20 2026  
   
...............................
 
 
   
..THE DOWNTOWN CHARLESTON SC CLIMATE SUMMARY FOR MAY 20 2026
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1870 TO 2026  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 79 210 PM 95 1938 80 -1 88  
MINIMUM 73 110 AM 45 1894 69 4 77  
AVERAGE 76 74 2 83  
 
PRECIPITATION (IN)  
TODAY 0.00 4.39 1932 0.07 -0.07 0.00  
MONTH TO DATE 1.08 1.45 -0.37 5.33  
SINCE MAR 1 1.79 7.44 -5.65 8.36  
SINCE JAN 1 5.52 12.56 -7.04 11.03  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 9 0 9 0  
SINCE MAR 1 171 275 -104 172  
SINCE JUL 1 1569 1619 -50 1512  
 
COOLING  
TODAY 11 10 1 18  
MONTH TO DATE 126 152 -26 215  
SINCE MAR 1 317 265 52 380  
SINCE JAN 1 322 270 52 388    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SE (140)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION SE (140)  
AVERAGE WIND SPEED 6.8  
   
......................................................
 
 
THE DOWNTOWN CHARLESTON SC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 80 99 1938  
MINIMUM TEMPERATURE (F) 69 51 1894  
 
SUNRISE AND SUNSET  
MAY 20 2026...........SUNRISE 618 AM EDT SUNSET 815 PM EDT  
MAY 21 2026...........SUNRISE 617 AM EDT SUNSET 816 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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