Illinois long range weather forecast

Local time: 13:56 Overcast 22 °F

The long-range forecast for Illinois indicates that current temperatures are within the expected ranges for this time of year, aligning closely with the historical average of 24.6 °F. This suggests typical weather patterns without significant deviations.

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Select a month and click on a day for more information

Illinois 30 days weather forecast

Check out our estimated 30 days weather forecast for Illinois, this data is based on the average weather in Illinois in the last few years.

For a more accurate and detailed forecast, check out the 14 day weather for Illinois next to the desired date.

Illinois long range weather forecast - FAQ

Do you provide 30 days weather forecast for Illinois?
You can see the next 30 weather forecast for Illinois at the top of the page, the next 14 days (from today) are more accurate, while the other is based on average of previous years.
Can I see the weather forecast for a particular date in Illinois?
Sure, you can select the date from the calendar above to view the forecast in Illinois on that date.
How accurate is the long-range weather forecast for Illinois?
Our long-range weather forecast for Illinois is provided by using statistics from previous years. Although we cannot predict the weather months in advance, we can see an average.
Can I see a long-range weather forecast for different countries?
Yes, we provide a 14 day weather forecast and a long-range weather forecast for different countries and cities. You can search for a location in the search box at the top of the page.
Cities in Illinois

For a more accurate weather forecast please select a city

Aurora Champaign Chicago Elgin Joliet Naperville Quincy Rockford Springfield Zion
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More about the weather in Illinois
Illinois 14 day weather Illinois weather in September Illinois weather in October Illinois Webcam Weather tomorrow Hotels in Illinois