Chicago weather in July 2025

Expect 29°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Chicago in July. Check more long-term weather averages for Chicago in July before you book your next holiday to Illinois in 2025/2026.

  • 29°C maximum daytime temperature in July in Chicago29
    29°C max day temperature
  • 10 hours of sunshine per day
  • 10 days with some rainfall in July in Chicago10
    10 days with some rainfall
  • 17°C minimum night-time temperature in July in Chicago17
    17°C min night temperature
  • 15 hours of daylight per day in July in Chicago15
    15 hours of daylight per day
  • Moderate heat & humidity in July in ChicagoM
    Moderate heat & humidity
  • 100 mm monthly rainfall in July in Chicago100
    100 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in July in Chicago9
    9 (Very High) UV index
  • 19°C sea temperature in July in Chicago19
    19°C sea temperature

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The July weather guide for Illinois (Chicago) 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 Chicago in July?

Daytime temperatures usually reach 29°C in Chicago in July with moderate heat and humidity, falling to 17°C at night.

How sunny is it in Chicago in July?

There are normally 10 hours of bright sunshine each day in Chicago in July - that's 69% of daylight hours.

How warm is the sea around Chicago in July?

The average sea temperature around Chicago in July is 19°C.

Does it rain in Chicago in July?

There are usually 10 days with some rain in Chicago in July and the average monthly rainfall is 100mm.

Chicago July sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 04:19 19:29
Wednesday, 16th July 2025 04:30 19:23
Thursday, 31st July 2025 04:44 19:09

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