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Illinois Climate & Weather
Illinois Climate and Weather
The weather in Illinois can be fairly extreme, in summer (June to August) temperatures rise to between 80-90°F (27-32°C) and there is high humidity, while in winter (January to March) it can be wet and cold, between 12°F and 29°F (-11°C and -2°C) with icy winds whipping off Lake Michigan and regular snow. May and September are the most pleasant months with reliably warm days.
Become our Illinois Travel Expert
We are looking for contributors for our Illinois travel guide. If you are a local, a regular traveller to Illinois or a travel professional with time to contribute and answer occasional forum questions, please contact us.
