Charleston County, SC Weather Forecast
County weather hub
Mostly Sunny then Chance Showers And Thunderstorms
Compare major city weather across Charleston County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Heat index values as high as 102. Southwest wind 2 to 8 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Charleston County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 11 of 11 mapped cities in Charleston County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 25 to Aug 30, 2026
- Latest sync
- Aug 24, 2026 4:25 PM EDT
- Forecast office
- CHS
- Source
- NOAA / NWS
Daily Outlook
This Week in Charleston County
Tuesday looks like the warmest upcoming period in Charleston County at 89 degrees F.
Friday Night is the coolest period ahead with temperatures near 75 degrees F.
The strongest winds are forecast for Thursday at about 3 to 12 mph SW.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 24, 2026 4:25 PM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- CHS
- Radar station
- KCLX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms between 2am and 5am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 76. Southeast wind 1 to 7 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely between 7am and 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 87. Southeast wind 2 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of showers and thunderstorms before 2am, then showers and thunderstorms likely. Partly cloudy, with a low around 76. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms likely before 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 70%.
A chance of showers and thunderstorms before 8pm, then showers and thunderstorms likely between 8pm and 2am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 76. Chance of precipitation is 60%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 8pm, then showers and thunderstorms likely. Partly cloudy, with a low around 75. Chance of precipitation is 70%.
Showers and thunderstorms likely before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 70%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 76. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Aug 25
|
Mostly Sunny then Chance Showers And Thunderstorms
|
89°F |
2 to 8 mph
SW
|
|
Tuesday Night
Aug 25
|
Chance Showers And Thunderstorms
|
76°F |
1 to 7 mph
SE
|
|
Wednesday
Aug 26
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
87°F |
2 to 10 mph
SE
|
|
Wednesday Night
Aug 26
|
Chance Showers And Thunderstorms
|
76°F |
5 to 9 mph
S
|
|
Thursday
Aug 27
|
Showers And Thunderstorms Likely
|
88°F |
3 to 12 mph
SW
|
|
Thursday Night
Aug 27
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
76°F |
5 to 12 mph
SW
|
|
Friday
Aug 28
|
Chance Showers And Thunderstorms
|
88°F |
3 to 12 mph
SW
|
|
Friday Night
Aug 28
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
75°F |
2 to 10 mph
SW
|
|
Saturday
Aug 29
|
Showers And Thunderstorms Likely
|
87°F |
2 to 7 mph
SW
|
|
Saturday Night
Aug 29
|
Chance Showers And Thunderstorms
|
76°F |
2 to 6 mph
S
|
|
Sunday
Aug 30
|
Chance Showers And Thunderstorms
|
88°F |
2 to 8 mph
E
|
|
Sunday Night
Aug 30
|
Chance Showers And Thunderstorms
|
76°F |
2 to 7 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Charleston County.
Coverage
Forecast coverage currently spans 11 of 11 mapped cities in Charleston County.
Largest mapped city population in this region: 139,714.
