Central Illinois Weather Alert: Fall Chill Deepens Through Thursday Night, Frost Possible by Weekend

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CHAMPAIGN, Ill. – Gray skies and damp pavement mark the start of this Tuesday across east-central Illinois, where a steady line of showers stretches along I-57 and points east toward Danville. Temperatures linger in the upper 40s at dawn, and a cool east wind keeps the air feeling brisk — a prelude to the colder Halloween stretch ahead.

According to the National Weather Service office in Lincoln, showers will taper later Tuesday evening, but the lingering moisture and gusty winds may slow the afternoon commute. Drivers along U.S. 150 and I-74 should plan for reduced visibility and slick roads through the evening as rainfall totals reach up to a quarter inch.

By Wednesday, scattered light showers remain possible before clearing takes hold late in the day. Drier air filters in from the north, dropping overnight lows to near 40°F. The chill deepens Thursday as highs stall in the upper 50s, with mostly sunny skies returning — ideal for daytime errands but brisk for trick-or-treaters after sunset.

Winds will ease Thursday evening, yet the air will feel notably colder as temperatures slip toward the upper 30s under partly cloudy skies. Parents should plan extra layers and hand warmers for outdoor Halloween events across Champaign County.

Friday and Saturday stay dry but cool, with highs in the 50s and clear nights hinting at patchy frost in rural areas north of I-72. It’s a fitting close to October’s transition — mild days, crisp evenings, and early signs of November’s colder shift on the horizon. After all, winter isn’t far behind.


Five-Day Forecast for Champaign, IL:
Tue: 60/44 – Showers, mainly afternoon; breezy east wind up to 20 mph.
Wed: 58/40 – Isolated showers early; clearing late, turning cooler.
Thu: 58/38 – Mostly sunny; chilly breeze for evening trick-or-treaters.
Fri: 58/37 – Mostly sunny and cool; light north wind.
Sat: 53/33 – Partly sunny; patchy frost possible in outlying areas.