Louisville weather in September 2026

Q: How hot is it in Louisville in September?

Daytime temperatures usually reach 27°C in Louisville in September with low heat and humidity, falling to 14°C at night.

Q: How sunny is it in Louisville in September?

There are normally 8 hours of bright sunshine each day in Louisville in September - that's 62% of daylight hours.

Q: Does it rain in Louisville in September?

There are usually 8 days with some rain in Louisville in September and the average monthly rainfall is 80mm.

Expect daytime maximum temperatures of 27°C in Louisville, Kentucky in September based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 80 mm of rainfall in the month.

27
27°C max day temperature
8
8 hours of sunshine per day
8
8 days with some rainfall
14
14°C min night temperature
12
12 hours of daylight per day
L
Low heat & humidity
80
80 mm of monthly rainfall
7
7 (High) UV index

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The September weather guide for Kentucky (Louisville) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

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How hot is it in Louisville in September?

Daytime temperatures usually reach 27°C in Louisville in September with low heat and humidity, falling to 14°C at night.

How sunny is it in Louisville in September?

There are normally 8 hours of bright sunshine each day in Louisville in September - that's 62% of daylight hours.

Does it rain in Louisville in September?

There are usually 8 days with some rain in Louisville in September and the average monthly rainfall is 80mm.

Louisville September sunrise & sunset times

Browse the sunrise and sunset times for Louisville in September 2026. Select a month to view Louisville sunrise and sunset times for the next 12 months.

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