Harrisonburg Weather in September

What's the weather like in Harrisonburg (Louisiana) in September 2025?

The climate in Harrisonburg during September can be summarized as hot, humid and a little damp.

September is in the fall / autumn in Harrisonburg and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 31°C (87°F), whilst at night 19°C (66°F) is normal.

Harrisonburg weather averages (imperial / metric)
Daytime temperature 30.6°C 87.1°F
Nightly temperature 18.6°C 65.5°F
Average temperature 24.6°C 76.3°F
Daily sunshine 8.6 hrs
Avg rainfall 85 mm 3.3 ins
Rainy days 8 days
Sea temperature 27.2°C 81°F
Humidity 76%
Windspeed 11.5kph 7 mph

On average September is the driest month of the year in Harrisonburg with around 85mm 3.3 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.6 hours of sunshine per day.

September temperatures in Harrisonburg

Harrisonburg average temperature in September

September rainfall

Harrisonburg average rain in September

September hourly sunshine

Harrisonburg 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 Harrisonburg 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

Harrisonburg weather stats

Harrisonburg weather statistics
Hottest month: July 33.2°C 91.8°F
Driest month: September 85mm 3.3ins
Sunniest month: June 10.6hrs
Coldest month: January 13.3°C 55.9°F
Wettest month: December 157mm 6.2ins
Map showing location of Harrisonburg (31.77211, -91.82152) Harrisonburg map pin © Google

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