🇺🇸 Weather in Charleston
Current Weather in Charleston
Dense Smoke Advisory issued July 20 at 2:16AM EDT until July 20 at 10:00AM EDT by NWS Charleston SC
32°C
Feels like 39°C. Moderate or heavy rain with thunder.
Map Overlays:
Hourly Forecast for Charleston
14:00
33°
4%
15:00
33°
6%
16:00
33°
5%
17:00
32°
5%
18:00
31°
5%
19:00
30°
6%
20:00
30°
8%
21:00
29°
11%
22:00
29°
10%
23:00
29°
8%
00:00
29°
8%
01:00
28°
29%
02:00
28°
17%
03:00
28°
51%
04:00
28°
30%
05:00
28°
9%
06:00
28°
25%
07:00
28°
32%
08:00
28°
19%
09:00
30°
31%
10:00
31°
19%
11:00
32°
4%
12:00
32°
14%
13:00
33°
3%
14-Day Forecast for Charleston
2026-07-20
Sunny
33° /
28°
2026-07-21
Sunny
33° /
28°
2026-07-22
Sunny
33° /
27°
2026-07-23
Patchy rain nearby
33° /
25°
2026-07-24
Light rain shower
30° /
24°
2026-07-25
Patchy rain nearby
30° /
25°
2026-07-26
Light rain shower
31° /
24°
Additional Forecasts for Charleston
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 116.0 μg/m³
O₃ (Ozone) 80.0 μg/m³
NO₂ (Nitrogen Dioxide) 0.8 μg/m³
SO₂ (Sulphur Dioxide) 0.6 μg/m³
PM2.5 (Fine particles) 9.0 μg/m³
PM10 (Coarse particles) 12.9 μg/m³
Historical Weather
Weather Forecasts for Other Cities in United States
Weather in Charleston — FAQ
Answers refreshed each request based on current conditions in Charleston.
What is the weather like right now in Charleston?
Right now in Charleston, United States the temperature is 32.2°C (feels like 39.4°C), with moderate or heavy rain with thunder. Relative humidity is 71% and wind is 23.0 km/h.
What is today's high and low temperature in Charleston?
Today's forecast high in Charleston is 33.3°C and the overnight low is 27.9°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in Charleston today?
The chance of precipitation in Charleston today is 8%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in Charleston differ from nearby cities?
Even short distances can change temperatures noticeably. Charleston's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.