Illinois weather

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

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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.

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

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Compare Illinois weather with the USA

Below the Illinois weather chart shows average maximum daytime temperature for Illinois, USA (Chicago) and the USA (Washington).

Maximum daytime temperature (°C)

Illinois, USA (Chicago)
USA (Washington)
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Dec

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

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Tropical storm risk: Illinois hurricane season

% of month affected by tropical storms
0
0
0
0
0
<1%
<1%
0
<1%
0
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

The Illinois tropical storm risk chart above shows the hurricane season for Chicago, Illinois. The chart was processed from data supplied by the US Meteorological Agency (NOAA). Find out more about our data sources.

More about tropical storms

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