Charleston (MO) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Charleston.
Climate overview of Charleston
Temperatures in Charleston, Missouri, United States of America, vary greatly throughout the year. July is the hottest month at 32°C (90°F), while January is the coldest at 6°C (43°F).
The city has a wet climate, receiving around 1370 mm (54 in) of rain/snowfall per year. Despite the high annual total, it has very warm summers and cold winters. April is the wettest month.
Charleston Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Charleston - and find the best time to visit.
Monthly Temperature in Charleston
The climate in Charleston is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a very warm 32°C (90°F) in July to a chilly 6°C (43°F) in January.
Nighttime temperatures range from 21°C (70°F) in July to -3°C (27°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Charleston
Charleston has a notably wet climate with abundant precipitation, recording 1370 mm (54 in) of rain/snowfall per year. The amount of precipitation varies moderately throughout the year. The wettest month, April, sees around 148 mm (5.8 in) of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, August, still receives a respectable 71 mm (2.8 in) of rainfall. For more details, please visit our Charleston Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Charleston
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: September
- Warmest weather: June, July and August
- Seasonal pattern: Very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -3°C (27°F).
Frequently asked questions about the climate in Charleston
What is the best time to visit Charleston?
September typically offers the most optimal weather in Charleston. In contrast, January, February and December tend to have less optimal conditions. Charleston has very warm summers and cold winters.
What temperatures can I expect in Charleston?
Daytime highs range from 6°C (43°F) in January to 32°C (90°F) in July. Nighttime lows range from -3°C (27°F) to 21°C (70°F). Temperatures vary considerably through the year.
How much rain does Charleston get?
Annual rainfall is around 1370 mm (54 in). April is the wettest month with 148 mm (5.8 in), while August is the driest with 71 mm (2.8 in).
Charleston 3-Day Forecast
Charleston on the map
Charleston is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Kissimmee
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24°C (75°F) San Francisco22°C (72°F) 
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