Winchester Weather in September

What's the weather like in Winchester (Indiana) in September 2025?

The climate in Winchester during September can be summarized as mild and reasonably dry.

September is in the fall / autumn in Winchester and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 25°C (76°F), whilst at night 11°C (51°F) is normal.

Winchester weather averages (imperial / metric)
Daytime temperature 24.6°C 76.2°F
Nightly temperature 10.7°C 51.2°F
Average temperature 17.6°C 63.7°F
Daily sunshine 8.8 hrs
Avg rainfall 73 mm 2.9 ins
Rainy days 9 days
Sea temperature 21.3°C 70.4°F
Humidity 73%
Windspeed 13.3kph 8 mph

On average September is the 5th driest month of the year in Winchester with around 73mm 2.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.8 hours of sunshine per day.

September temperatures in Winchester

Winchester average temperature in September

September rainfall

Winchester average rain in September

September hourly sunshine

Winchester 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 Winchester 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

Winchester weather stats

Winchester weather statistics
Hottest month: July 28.6°C 83.5°F
Driest month: February 55mm 2.2ins
Sunniest month: June 11hrs
Coldest month: January -0.3°C 31.5°F
Wettest month: July 106mm 4.2ins
Map showing location of Winchester (40.17199, -84.98135) Winchester map pin © Google

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