Marion weather in July 2025

Expect 90°F daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Marion in July. Check more long-term weather averages for Marion in July before you book your next holiday to Illinois in 2025/2026.

  • 90°F maximum daytime temperature in July in Marion90
    90°F max day temperature
  • 10 hours of sunshine per day
  • 9 days with some rainfall in July in Marion9
    9 days with some rainfall
  • 66°F minimum night-time temperature in July in Marion66
    66°F min night temperature
  • 14 hours of daylight per day in July in Marion14
    14 hours of daylight per day
  • High heat & humidity in July in MarionH
    High heat & humidity
  • 3.9 inches monthly rainfall in July in Marion3.9
    3.9 inches of monthly rainfall
  • UV (maximum) index 10 (Very High) in July in Marion10
    10 (Very High) UV index

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The July 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)  |  Imperial (°F)

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How hot is it in Marion in July?

Daytime temperatures usually reach 90°F in Marion in July with high heat and humidity, falling to 66°F at night.

How sunny is it in Marion in July?

There are normally 10 hours of bright sunshine each day in Marion in July - that's 71% of daylight hours.

Does it rain in Marion in July?

There are usually 9 days with some rain in Marion in July and the average monthly rainfall is 3.9 inches.

Marion July sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 04:38 19:21
Wednesday, 16th July 2025 04:47 19:16
Thursday, 31st July 2025 04:59 19:05

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