International Falls weather in September 2025

Expect 18°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in International Falls in September. Check more long-term weather averages for International Falls in September before you book your next holiday to Minnesota in 2025/2026.

  • 18°C maximum daytime temperature in September in International Falls18
    18°C max day temperature
  • 6 hours of sunshine per day
  • 12 days with some rainfall in September in International Falls12
    12 days with some rainfall
  • 7°C minimum night-time temperature in September in International Falls7
    7°C min night temperature
  • 13 hours of daylight per day in September in International Falls13
    13 hours of daylight per day
  • No heat & humidity in September in International Falls0
    No heat & humidity
  • 82 mm monthly rainfall in September in International Falls82
    82 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in International Falls5
    5 (Moderate) UV index

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The September weather guide for Minnesota (International Falls) 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 International Falls in September?

Daytime temperatures usually reach 18°C in International Falls in September, falling to 7°C at night.

How sunny is it in International Falls in September?

There are normally 6 hours of bright sunshine each day in International Falls in September - that's 45% of daylight hours.

Does it rain in International Falls in September?

There are usually 12 days with some rain in International Falls in September and the average monthly rainfall is 82mm.

International Falls September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:31 18:55
Monday, 15th September 2025 05:51 18:26
Tuesday, 30th September 2025 06:12 17:54

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