Chicago weather in August 2020

  • 28°C maximum daytime temperature in August in Chicago28
    28°C max day temperature
  • 9 hours of sunshine per day
  • 9 days with some rainfall in August in Chicago9
    9 days with some rainfall
  • 16°C minimum night-time temperature in August in Chicago16
    16°C min night temperature
  • 14 hours of daylight per day in August in Chicago14
    14 hours of daylight per day
  • Moderate heat & humidity in August in ChicagoM
    Moderate heat & humidity
  • 97 mm monthly rainfall in August in Chicago97
    97 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Chicago8
    8 (Very High) UV index
  • 21°C sea temperature in August in Chicago21
    21°C sea temperature
  • Top deals & discounts
  • Chicago weather overview
  • Chicago climate averages by month
  • More destinations
  • Best time to go to Chicago
  • Chicago 5-day weather forecast

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The August weather guide for Chicago, Illinois 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.

  • Book flights to Chicago from the UK with Virgin Atlantic
  • Depart from London Heathrow Airport
  • Join Flying Club & earn miles with every booking

How hot is it in Chicago in August?

Daytime temperatures usually reach 28°C in Chicago in August with moderate heat and humidity, falling to 16°C at night.

How sunny is it in Chicago in August?

There are normally 9 hours of bright sunshine each day in Chicago in August - that's 67% of daylight hours.

How warm is the sea around Chicago in August?

The average sea temperature around Chicago in August is 21°C.

Does it rain in Chicago in August?

There are usually 9 days with some rain in Chicago in August and the average monthly rainfall is 97mm.

Chicago sunrise & sunset times for August 2020

Browse the sunrise & sunset times for Chicago in August 2020. Select a month to view Chicago sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st August 2020 05:45 20:08
Sunday, 16th August 2020 06:00 19:48
Monday, 31st August 2020 06:16 19:25
  • Book flights to Chicago from the UK with Virgin Atlantic
  • Depart from London Heathrow Airport
  • Join Flying Club & earn miles with every booking

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

Discover more about the USA

Where's hot in Illinois in August?

Below are average maximum temperatures at popular destinations in Illinois in August. Select a destination to see more weather parameters.

More destinations & map >>

Related posts

Popular travel offers

Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.