Charleston County Weather Forecast
Charleston County weather: 81°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Live radar and satellite over Charleston County
Open the layers control on the map to switch rain radar and cloud imagery on. Both load only when you ask for them.
Radar frames: RainViewer (global composite, ~10 minute refresh). Satellite: NASA GIBS MODIS true colour, previous day. Coverage and refresh vary by region.
Active alerts for Charleston County
Heat Advisory issued August 21 at 2:04AM EDT until August 21 at 8:00PM EDT by NWS Charleston SC
Issued by NWS Charleston SC
Weather in Charleston County right now
Source: Open-Meteo. Updated 5:08 AM, Aug 21 local time.
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
See the Charleston County forecast by time range
Charleston County weather - more answers
Explore Charleston County
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Charleston County?
Charleston County is a county in South Carolina. Its coordinates are 32.7765, -79.9311. It lies in North America.
What is the weather like in Charleston County right now?
It is currently 81°F (27°C) with clear. Humidity is 82% and wind is 1 mph.
When is the best time to visit Charleston County?
March, April, June, September and November offer the most comfortable conditions in Charleston County, which has a temperate climate. January, August and December are usually the hardest months for outdoor plans.
What time zone is Charleston County in?
Charleston County observes America/New_York (UTC-04:00). The local time is 5:08 AM.
How many people live in Charleston County?
Charleston County has a population of approximately 410.000.
What is the nearest airport to Charleston County?
The closest airports are Hartsfield-Jackson Atlanta International Airport (ATL), 267 mi away.
What are the top things to do in Charleston County?
Popular options include Hunting Island State Park, Congaree National Park, Myrtle Beach and Chimney Rock State Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (us-counties) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 21, 2026 at 5:08 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
