Champaign, Illinois – Residents across central Illinois should prepare for a significant shift in weather patterns starting Wednesday afternoon. Thunderstorms will develop, bringing risks of damaging wind gusts, large hail, and even isolated tornadoes. This weather pattern could impact travel and outdoor plans, especially for those on major roadways like I-57 and I-74.
According to the National Weather Service (NWS) Lincoln IL office, these thunderstorms are expected to develop along a cold front Wednesday afternoon. While the chance of severe storms is low tonight (less than 5%), heavy rain may lead to localized flooding in urban and low-lying areas. This follows a warm Juneteenth, which saw temperatures climb.
The NWS indicates that damaging wind gusts and large hail are primary concerns with Wednesday’s storms. A few tornadoes are also possible. Specific impacts are likely for cities including Champaign, Urbana, Decatur, and Springfield. Drivers should exercise caution and avoid non-essential travel if conditions worsen. Residents should also secure loose outdoor items.
Looking ahead, a period of hot and humid weather will arrive by the end of the week. High temperatures will reach the lower to mid-90s from Saturday through Monday. Heat index values could exceed 100 degrees each afternoon. This poses an increased risk for heat-related illnesses, especially for sensitive individuals without effective cooling. Ensure you have access to air conditioning or seek cooling centers. Stay hydrated and avoid strenuous outdoor activities during peak heat.
Thunderstorm development continues to be a possibility daily into early next week, with varying chances. More advisories may follow.
Here’s your five-day forecast:
- Wednesday, June 18th: High: 83°F. Showers and thunderstorms likely, mainly after 4 PM. Winds from the south at 15 to 20 mph, with gusts up to 32 mph. New rainfall amounts between a quarter and half an inch possible.
- Thursday, June 19th (Juneteenth): High: 83°F. Mostly sunny with a high near 83. West northwest wind around 9 mph, with gusts as high as 24 mph.
- Friday, June 20th: High: 87°F. Mostly sunny with a high near 87. South southwest wind 6 to 10 mph, with gusts as high as 16 mph.
- Saturday, June 21st: High: 92°F. Sunny, with a high near 92.
- Sunday, June 22nd: High: 95°F. Sunny and hot, with a high near 95.
