St Louis weather in September 2024

Expect 27°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in St Louis in September. Check more long-term weather averages for St Louis in September before you book your next holiday to Missouri in 2024/2025.

27
27°C max day temperature
8
8 hours of sunshine per day
8
8 days with some rainfall
15
15°C min night temperature
12
12 hours of daylight per day
L
Low heat & humidity
78
78 mm of monthly rainfall
7
7 (High) UV index

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The September weather guide for Missouri (St Louis) 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)

More about the USA

How hot is it in St Louis in September?

Daytime temperatures usually reach 27°C in St Louis in September with low heat and humidity, falling to 15°C at night.

How sunny is it in St Louis in September?

There are normally 8 hours of bright sunshine each day in St Louis in September - that's 63% of daylight hours.

Does it rain in St Louis in September?

There are usually 8 days with some rain in St Louis in September and the average monthly rainfall is 78mm.

St Louis September sunrise & sunset times

Browse the sunrise and sunset times for St Louis in September 2024. Select a month to view St Louis sunrise and sunset times for the next 12 months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Sunday, 1st September 2024	06:31	19:30
Sunday, 15th September 2024	06:43	19:08
Monday, 30th September 2024	06:56	18:44

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Missouri - quick facts
Flight time^✝	11.5 hours
Time difference	UK -6 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Tourist info	Missouri Division of Tourism