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Weather.com brings you the most accurate monthly weather forecast for Mount Charleston, NV with average/record and high/low temperatures, precipitation and more.
- Temperature
- Humidity
- Sea Temperature
The daily maximum temperature in Charleston in September averages 85°F (29°C), with the lowest daily highs being around 70-75°F (21-24°C), up to around 93°F (34°C) on the hottest days. In an average year, you can expect the temperature to exceed 90°F (32°C) on 5-10 days each month, with a third to a half of days below 85°F (30°C). In the morning, t...
By September, Charleston’s weather is beginning to feel less humid than during the height of summer, but it will still be extremely humid for much of the month.
Surface water temperature in September at the beaches near Charleston is around 80-83°F (26-29°C), still ideal for swimming and watersports.
September Weather in Charleston South Carolina, United States. Daily high temperatures decrease by 6°F, from 86°F to 80°F, rarely falling below 73°F or exceeding 91°F. Daily low temperatures decrease by 7°F, from 74°F to 67°F, rarely falling below 57°F or exceeding 78°F.
1 day ago · Detailed Forecast. Tonight. Clear, with a low around 49. South wind 3 to 6 mph. Memorial Day. Sunny, with a high near 69. Light and variable wind becoming south 5 to 8 mph in the morning. Winds could gust as high as 21 mph.
4 days ago · Mostly Clear. 57.7 °F. Feels Like: 53.8 °F. Mostly clear, with a low around 38. West southwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 23 mph. Detailed 5 Day Forecast. Temp. Trend -2.2 °F/hr. Humidity 34 % Dewpoint 29.5 °F. Wind Chill 57.7 °F. High Temp 66.2 °F at 14:06. Low Temp 36.4 °F at 03:49.
