Illinois weather

Get the latest coronavirus (COVID-19) updates for the USA with current travel advice, statistics and online resources.

Below are the temperatures expected today at popular destinations in Illinois. Select a destination to compare today's forecast with average weather conditions.

24
Springfield
22
Chicago

More destinations >>

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

The weather guide for Illinois shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

Recommended for Illinois

Travel Up: Top offers on flights worldwide

Sale

Check out top flight deals & low fares from popular airlines
Search for return & one-way flights or multi-city trips
Airlines include BA, Virgin Atlantic, United & Turkish Airlines

Go to Travel Up deal >>

View all Travel Up offers

Which is the hottest month in Illinois?

The hottest time of year in Chicago, Illinois is normally July. Expect maximum daytime temperatures to reach 29°C with moderate heat and humidity.

Which month has the most rain in Illinois?

In terms of rainfall, July is usually the wettest month in Chicago, Illinois with 100mm on average. There are normally 10 days in July with some rain.

When is it sunniest in Illinois?

The sunniest time of year in Chicago, Illinois is normally July with bright sunshine on average for 69% of daylight hours; that's 10 hours of sunshine per day.