Our Illinois long range weather forecast is based on historical data analysis rather than real-time forecasting models. While this provides a general outlook, weather conditions can change. We recommend checking the forecast closer to your planned date for the most current information.

Rain Forecast for the Next 14 Days in Illinois

The chart displays the expected rainfall values (in mm) over the next 14 days in Illinois, highlighting variations in precipitation levels for specific dates. ☔

Illinois Wind Speed Forecast Chart

This chart illustrates the projected daily max wind speed (in km) in Illinois over the next two weeks, providing insights into periods of increased or decreased wind activity. 🌀

Frequently asked questions about the weather in Illinois

How warm is it in Illinois over the next 14 days?

Over the next two weeks, temperatures in Illinois are expected to range from around 19 °F on the coldest nights up to about 35 °F on the warmest days. Use this range to plan what to pack and wear.

Will it rain in Illinois in the next two weeks?

Yes - rain is expected on about 8 of the next 14 days in Illinois, with roughly 17.9 mm of rainfall in total. It is worth keeping an umbrella or raincoat handy.

How windy is it in Illinois?

Maximum wind speeds in Illinois are forecast to reach about 26 km/h at their peak over the next 14 days.

When is the best time to visit Illinois?

For a month-by-month look at temperatures and rainfall, see our best time to visit Illinois guide.

How accurate is the 14-day forecast for Illinois?

Our Illinois forecast uses leading meteorological models and is most reliable over the next few days. Long-range days beyond a week show general trends and can change, so check back closer to the date for updates.

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Counties in Illinois

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Champaign County Cook County DuPage County Effingham County Kane County Macon County McLean County Peoria County Sangamon County Will County Williamson County Winnebago County

Top locations in Illinois

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Aurora Bloomington Champaign Chicago Decatur Effingham Joliet Peoria Rockford Springfield

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Where is Illinois?

Get accurate weather forecasts for Illinois, located at latitude 41.85 and longitude -87.65. Stay updated with localized weather information tailored for Illinois.

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Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
						1 27°
2 26°	3 27°	4 27°	5 26°	6 25°	7 27°	8 28°
9 27°	10 27°	11 27°	12 28°	13 28°	14 26°	15 27°
16 28°	17 26°	18 28°	19 25°	20 28°	21 35°	22 28°
23 27°	24 27°	25 27°	26 26°	27 28°	28 27°	29 27°
30 25°	31 25°