Fort Mill (SC) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Fort Mill.
Climate overview of Fort Mill
Fort Mill, South Carolina, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 32°C (90°F) in July, while winters cool to 11°C (52°F) in January.
With around 1099 mm (43 in) of annual rain/snowfall, Fort Mill has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has very warm summers and cold winters. The wettest month is December. May is the sunniest month, averaging 9.8 hours of sunshine per day.
Fort Mill Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Fort Mill - and find the best time to visit.
Monthly Temperature in Fort Mill
Depending on the time of the year, temperatures range from very warm to chilly in Fort Mill. Average daytime temperatures reach a very warm 32°C (90°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 11°C (52°F).
At night, temperatures range from around 21°C (70°F) in July to -1°C (30°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Fort Mill
Fort Mill has a relatively rain/snowy climate with high precipitation levels, averaging 1099 mm (43 in) of rain/snowfall annually. Fort Mill experiences moderate seasonal variation in rainfall, with monthly averages ranging from 118 mm (4.6 in) in December, the wettest month, and 66 mm (2.6 in) in October, the driest month. For more details, please visit our Fort Mill Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Fort Mill
Fort Mill can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 9.8 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 5.7 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Fort Mill by Month
The relative humidity is high throughout the year in Fort Mill.
The city experiences its highest humidity in August, reaching 74%. In April, the humidity drops to its lowest level at 59%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Fort Mill
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: April, May, September and October
- Warmest weather: June, July and August
- Most sunshine: May, June and July
- Seasonal pattern: Very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -1°C (30°F).
Frequently asked questions about the climate in Fort Mill
What is the best time to visit Fort Mill?
April, May, September and October typically offer the most optimal weather in Fort Mill. In contrast, January, February, June, July and December tend to have less optimal conditions. Fort Mill has very warm summers and cold winters.
What temperatures can I expect in Fort Mill?
Daytime highs range from 11°C (52°F) in January to 32°C (90°F) in July. Nighttime lows range from -1°C (30°F) to 21°C (70°F). Temperatures vary considerably through the year.
How much rain does Fort Mill get?
Annual rainfall is around 1099 mm (43 in). December is the wettest month with 118 mm (4.6 in), while October is the driest with 66 mm (2.6 in).
How sunny is Fort Mill?
Fort Mill receives around 2,829 hours of sunshine per year. May is the sunniest month with 293 hours, while December is the cloudiest with just 170 hours. Overall, Fort Mill enjoys abundant sunshine.
Fort Mill 3-Day Forecast
Fort Mill on the map
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