- Clothing
- Light layers work well; a jacket for the evening.
Tomorrow's Weather Forecast - Charleston
Tomorrow's weather in Charleston. high 30°C (86°F), low 24°C (75°F). Overcast.
Tomorrow’s Outlook
Tomorrow brings a similar temperature to today. Light rain is possible, though a 20% peak chance means much of the day could stay dry. That risk lines up with humidity averaging 87% through the day the more moisture in the air, the more readily clouds build into showers. Humidity stays high near 87%, so it will feel muggier and stickier than the temperature alone suggests. A light breeze near 17 km/h is expected. Sunrise is at 7:01 AM and sunset at 7:29 PM, for about 12h 28m of daylight.
- Tomorrow
- 30°/ 24°
- Today30° / 25°
Tomorrow’s Hourly Weather Outlook
Morning6 AM – Noon26°
- Rain probability
- 20%
- Wind speed
- 5 km/h
AfternoonNoon – 6 PM29°
- Rain probability
- 16%
- Wind speed
- 17 km/h
Evening6 PM – Midn27°
- Rain probability
- 9%
- Wind speed
- 14 km/h
NightMidn – 6 AM26°
- Rain probability
- 13%
- Wind speed
- 11 km/h
24-Hour Rain & Temperature Forecast
Tomorrow12 Sep
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Planning Advice for Tomorrow
- Outdoor
- Good conditions for outdoor activities.
- Travel
- Standard travel conditions expected.
Sunrise & Sunset
Sunrise
Dawn 6:31 AMTotal Daylight
Full day forecastSolar noon 1:15 PM
Sunset
Dusk 7:59 PMvs today-2 min daylight
Sunrise shift1 min later
Sunset shift2 min earlier
5-Day Weather Forecast
Full 15-Day ForecastWeather Insight
Charleston is forecast to reach a high of 30°C tomorrow, with an overnight low around 24°C. That's 1° above the long-term average high of 29°C for this time of year. It continues a recent pattern — 21 of the last 28 days with published data have run warmer than normal. Expect a low chance of rain (20% probability) and a gentle breeze averaging 17 km/h. Air quality is currently Moderate (AQI 52), driven mainly by PM2.5 at 11 μg/m³.
Today vs Normal
30°C0° below normal
The long-term average high for today is 30°C.
21 of the last 28 days with published data ran above normal.
That's a break from the pattern - today's forecast runs below normal even though the recent stretch mostly ran above.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air Quality
Moderate
Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.