Marion weather in October 2025

Expect 21°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Marion in October. Check more long-term weather averages for Marion in October before you book your next holiday to Illinois in 2025/2026.

  • 21°C maximum daytime temperature in October in Marion21
    21°C max day temperature
  • 7 hours of sunshine per day
  • 8 days with some rainfall in October in Marion8
    8 days with some rainfall
  • 7°C minimum night-time temperature in October in Marion7
    7°C min night temperature
  • 11 hours of daylight per day in October in Marion11
    11 hours of daylight per day
  • No heat & humidity in October in Marion0
    No heat & humidity
  • 75 mm monthly rainfall in October in Marion75
    75 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in October in Marion5
    5 (Moderate) UV index

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The October weather guide for Illinois (Marion) 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 Marion in October?

Daytime temperatures usually reach 21°C in Marion in October, falling to 7°C at night.

How sunny is it in Marion in October?

There are normally 7 hours of bright sunshine each day in Marion in October - that's 62% of daylight hours.

Does it rain in Marion in October?

There are usually 8 days with some rain in Marion in October and the average monthly rainfall is 75mm.

Marion October sunrise & sunset times

Browse the sunrise and sunset times for Marion in October 2025. Select a month to view Marion sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 05:52 17:38
Thursday, 16th October 2025 06:05 17:16
Friday, 31st October 2025 06:20 16:58

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