DAVENPORT, Iowa–Illinois – A sharp chill is sweeping into the Mississippi River Valley this Halloween morning, setting up a brisk weekend where light rain may briefly mix with snow before sunrise Saturday. Leaves will rattle under stiff west winds today as the Quad Cities region transitions from late-fall warmth toward its first taste of early-winter air.
According to the National Weather Service in the Quad Cities, Friday’s mild sunshine gives way to cooler air tonight, dropping temperatures into the mid-30s. By Saturday morning, a weak disturbance moving along I-80 could trigger scattered showers with a slight chance of rain changing to wet flakes, mainly north of the metro. Confidence remains low, but any mix would mark the season’s first trace of wintry precipitation in eastern Iowa and western Illinois.
Roads should stay clear, but damp pavement and gusty winds could create slick spots for early travelers and trick-or-treat weekend events. Residents should secure outdoor decorations and prepare for temperatures running 10–15 degrees cooler than earlier this week.
By Sunday, skies turn mostly sunny again, with highs rebounding into the mid-50s as daylight saving time ends. The calmer stretch continues into early next week, offering good conditions for raking leaves, packing away hoses, or checking furnace filters before the next cold surge.
Early signals from long-range models hint at a stronger cold push late next week, with a better chance of measurable snow developing in the Upper Midwest. For now, the region can expect a crisp, breezy transition weekend that feels unmistakably like November’s arrival.
Five-Day Forecast for Davenport, IA:
Fri: 55/34 – Mostly sunny; breezy west wind near 10 mph.
Sat: 48/31 – 20% chance rain/snow mix early; brisk northwest breeze.
Sun: 54/40 – Mostly sunny; calm and milder by afternoon.
Mon: 60/35 – Sunny and pleasant; light winds.
Tue: 63/37 – Mostly sunny; mild stretch continues.
