Rock Hill Weather in September

What's the weather like in Rock Hill (South Carolina) in September 2025?

The climate in Rock Hill during September can be summarized as warm, humid and damp.

September is in the fall / autumn in Rock Hill and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 28°C (83°F), whilst at night 17°C (62°F) is normal.

Rock Hill weather averages (imperial / metric)
Daytime temperature 28.1°C 82.5°F
Nightly temperature 16.8°C 62.2°F
Average temperature 22.4°C 72.3°F
Daily sunshine 8.5 hrs
Avg rainfall 103 mm 4.1 ins
Rainy days 7 days
Sea temperature 25.9°C 78.6°F
Humidity 74%
Windspeed 10.8kph 7 mph

On average September is the 6th driest month of the year in Rock Hill with around 103mm 4.1 inches of rain making it a damp time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.5 hours of sunshine per day.

September temperatures in Rock Hill

Rock Hill average temperature in September

September rainfall

Rock Hill average rain in September

September hourly sunshine

Rock Hill average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Rock Hill in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Rock Hill weather stats

Rock Hill weather statistics
Hottest month: July 31.7°C 89.1°F
Driest month: April 79mm 3.1ins
Sunniest month: April 9.5hrs
Coldest month: January 10.2°C 50.4°F
Wettest month: March 126mm 5ins
Map showing location of Rock Hill (34.92487, -81.02508) Rock Hill map pin © Google

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