831  
CDUS42 KCHS 092109  
CLICXM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHARLESTON SC  
509 PM EDT FRI MAY 09 2025  
   
...............................  
 
   
..THE DOWNTOWN CHARLESTON SC CLIMATE SUMMARY FOR MAY 9 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 79 330 PM 93 1936 78 1 80  
MINIMUM 66 730 AM 49 1917 66 0 69  
1928  
AVERAGE 73 72 1 75  
 
PRECIPITATION (IN)  
TODAY 0.08 1.64 1979 0.08 0.00 0.69  
MONTH TO DATE 1.07 0.67 0.40 1.08  
SINCE MAR 1 4.10 6.66 -2.56 13.09  
SINCE JAN 1 6.77 11.78 -5.01 17.70  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 172 275 -103 131  
SINCE JUL 1 1512 1619 -107 1291  
 
COOLING  
TODAY 8 7 1 10  
MONTH TO DATE 75 58 17 94  
SINCE MAR 1 240 171 69 245  
SINCE JAN 1 248 176 72 245    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 27 HIGHEST WIND DIRECTION N (350)  
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 7.7  
   
......................................................  
 
THE DOWNTOWN CHARLESTON SC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 92 1926  
1963  
MINIMUM TEMPERATURE (F) 67 47 1906  
 
SUNRISE AND SUNSET  
MAY 9 2025...........SUNRISE 625 AM EDT SUNSET 808 PM EDT  
MAY 10 2025...........SUNRISE 624 AM EDT SUNSET 808 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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