152
CXUS52 KCHS 011452
CLMCXM
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1036 AM EDT MON JUN 01 2026
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...THE DOWNTOWN CHARLESTON SC CLIMATE SUMMARY FOR THE MONTH OF MAY 2026...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1870 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 100 05/27/2019
LOW 45 05/20/1894
HIGHEST 89 05/28 MM MM 92 05/21
LOWEST 53 05/03 MM MM 66 05/09
05/11
05/31
AVG. MAXIMUM 78.4 79.0 -0.6 80.8
AVG. MINIMUM 69.1 68.0 1.1 70.6
MEAN 73.7 73.5 0.2 75.7
DAYS MAX >= 90 0 1.5 -1.5 2
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.0 0.0 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 11.93 1976
MINIMUM 0.02 2000
TOTALS 2.22 2.58 -0.36 6.01
DAYS >= .01 7 6.8 0.2 14
DAYS >= .10 5 4.3 0.7 7
DAYS >= .50 2 1.6 0.4 2
DAYS >= 1.00 0 0.8 -0.8 1
GREATEST
24 HR. TOTAL 0.89 05/02 TO 05/02
DEGREE DAYS
HEATING TOTAL 9 6 3 0
SINCE 7/1 1569 1619 -50 MM
COOLING TOTAL 288 269 19 342
SINCE 1/1 484 387 97 MM
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WIND (MPH)
AVERAGE WIND SPEED 9.3
HIGHEST WIND SPEED/DIRECTION 26/070
HIGHEST GUST SPEED/DIRECTION 31/070
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
RECORDS ESTABLISHED IN DOWNTOWN CHARLESTON DURING THE MONTH:
*MAY 22 - RECORD HIGH MINIMUM TEMPERATURE OF 76 DEGREES
*MAY 23 - RECORD HIGH MINIMUM TEMPERATURE OF 77 DEGREES
*MAY 27 - RECORD HIGH MINIMUM TEMPERATURE OF 79 DEGREES
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