St Louis weather in May 2025

Expect 25°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in St Louis in May. Check more long-term weather averages for St Louis in May before you book your next holiday to Missouri in 2025/2026.

  • 25°C maximum daytime temperature in May in St Louis25
    25°C max day temperature
  • 9 hours of sunshine per day
  • 10 days with some rainfall in May in St Louis10
    10 days with some rainfall
  • 13°C minimum night-time temperature in May in St Louis13
    13°C min night temperature
  • 14 hours of daylight per day in May in St Louis14
    14 hours of daylight per day
  • No heat & humidity in May in St Louis0
    No heat & humidity
  • 103 mm monthly rainfall in May in St Louis103
    103 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in St Louis8
    8 (Very High) UV index

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The May 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)

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How hot is it in St Louis in May?

Daytime temperatures usually reach 25°C in St Louis in May with no heat and humidity, falling to 13°C at night.

How sunny is it in St Louis in May?

There are normally 9 hours of bright sunshine each day in St Louis in May - that's 61% of daylight hours.

Does it rain in St Louis in May?

There are usually 10 days with some rain in St Louis in May and the average monthly rainfall is 103mm.

St Louis May sunrise & sunset times

Browse the sunrise and sunset times for St Louis in May 2025. Select a month to view St Louis sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:03 18:53
Friday, 16th May 2025 04:48 19:07
Saturday, 31st May 2025 04:38 19:19

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