Mississippi Valley Weather Alert: Illinois–Iowa Cold Snap, Chilly Nights Through Columbus Day

Expect cool mornings, bright afternoons, and a dry stretch perfect for outdoor plans.

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Quad Cities, IA–IL –
After a damp start to the week, residents across the Quad Cities can expect a crisp fall turnaround beginning Thursday, October 9. The National Weather Service reports that skies will clear by midweek, setting up several days of sunshine, cooler mornings, and comfortable afternoons—ideal conditions for fall events and outdoor plans.

According to the National Weather Service in the Quad Cities, isolated patchy frost is possible in rural stretches near the Highway 20 corridor early this week, but widespread hazards remain low. Drivers heading to work or school should still allow extra time for reduced visibility from early-morning fog.

By Thursday, high temperatures will climb near 70°F, with calm winds and bright sun expected through Friday. The trend continues into Columbus Day weekend, featuring dry weather, highs in the mid-70s, and cooler nights dipping into the low 50s. These steady conditions make it perfect for pumpkin patch visits, fall décor setups, and leaf-viewing trips along the Mississippi River.

No severe weather is forecast for the next several days, though meteorologists advise keeping an eye on shifting temperatures next week as a stronger cold front develops across the upper Midwest.

Five-Day Forecast (Quad Cities Area):

  • Thursday: Sunny, high 70°F.
  • Friday: Mostly sunny, high 74°F.
  • Saturday: Partly cloudy, high 70°F.
  • Sunday: Sunny, high 71°F.
  • Columbus Day (Monday): Mostly sunny, high 73°F.

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