St Paul weather in September 2025

Expect 21°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in St Paul in September. Check more long-term weather averages for St Paul in September before you book your next holiday to Minnesota in 2025/2026.

  • 21°C maximum daytime temperature in September in St Paul21
    21°C max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in September in St Paul10
    10 days with some rainfall
  • 9°C minimum night-time temperature in September in St Paul9
    9°C min night temperature
  • 12 hours of daylight per day in September in St Paul12
    12 hours of daylight per day
  • No heat & humidity in September in St Paul0
    No heat & humidity
  • 73 mm monthly rainfall in September in St Paul73
    73 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in St Paul5
    5 (Moderate) UV index

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The September weather guide for Minnesota (St Paul) 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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More about the USA

How hot is it in St Paul in September?

Daytime temperatures usually reach 21°C in St Paul in September, falling to 9°C at night.

How sunny is it in St Paul in September?

There are normally 8 hours of bright sunshine each day in St Paul in September - that's 60% of daylight hours.

Does it rain in St Paul in September?

There are usually 10 days with some rain in St Paul in September and the average monthly rainfall is 73mm.

St Paul September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:35 18:49
Monday, 15th September 2025 05:52 18:22
Tuesday, 30th September 2025 06:10 17:54

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