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Louisville weather in September 2026
Expect daytime maximum temperatures of 81°F in Louisville, Kentucky in September based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 3.1 inches of rainfall in the month.
- 81°F max day temperature
81 - 8 hours of sunshine per day
- 8 days with some rainfall
8 - 57°F min night temperature
57 - 12 hours of daylight per day
12 - Low heat & humidity
L - 3.1 inches of monthly rainfall
3.1 - 7 (High) UV index
7
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Recommended for Kentucky
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) | Imperial (°F)
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How hot is it in Louisville in September?
Daytime temperatures usually reach 81°F in Louisville in September with low heat and humidity, falling to 57°F 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 3.1 inches.
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.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Tuesday, 1st September 2026 | 06:13 | 19:13 |
| Tuesday, 15th September 2026 | 06:25 | 18:51 |
| Wednesday, 30th September 2026 | 06:38 | 18:27 |
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