Iowa-Illinois Weather Alert: 1 Inch Snow Risk And Freezing Temps Near I-80 By Tuesday Morning

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Iowa/Illinois – A cold, damp air mass is setting up slick roads and rising river concerns across the Quad Cities, where snow may briefly coat surfaces before a fast warmup. Drivers around Davenport and Rock Island could encounter slushy patches on I-80 and I-74 by early Tuesday as temperatures dip near freezing.

According to the National Weather Service Quad Cities office, up to 1 inch of snow is possible late tonight, especially southwest of a Fairfield-to-Macomb line, with freezing temperatures near 32°F creating a short window for slick travel . Tributary rivers are already experiencing or expected to see flooding, adding another layer of concern across eastern Iowa and northwest Illinois.

Tuesday improves with partly sunny skies and highs in the mid-40s, helping melt any early slush. Still, shaded roads and bridges may stay slick through mid-morning. Plan extra time if heading out early.

By Wednesday, conditions shift quickly. Highs surge to near 69°F with breezy south winds, accelerating snowmelt and pushing more water into area rivers. That rapid change may worsen localized flooding near low-lying roads and river-adjacent neighborhoods.

Rain chances increase Wednesday night and continue through Thursday, with multiple rounds of showers likely. Wet pavement and reduced visibility could impact travel along US-67 and I-280 during heavier bursts.

Use caution near flooded roadways and never drive through standing water. Conditions may change quickly as temperatures swing and precipitation shifts.

A more active spring pattern is setting up, with additional rain chances into the weekend. Are you seeing high water or slick roads in your area?

Five Day Outlook For Davenport, IA:
Tuesday: Partly sunny, high 46°F
Wednesday: Partly sunny, high 69°F
Thursday: Showers likely, high 65°F
Friday: Chance of showers, high 64°F
Saturday: Chance of showers, high 67°F