Weather in Illinois

Check out the Illinois weather forecast for the next two weeks. Planning a trip to Illinois in the near future? For a glimpse of the daily weather, take a look at our 14-day guide which offers you all the details you need to know. We want to help with the prep work before you go, so all you need to focus on is enjoying your holiday. To get an idea of whether it will be chilly or sunny in the next two weeks, use our weather forecast below. You can use it to decide when to explore the region, and when to plan any indoor activities. It’s also useful as a packing guide for your upcoming trip.