Weather
Iowa-Illinois Weather Alert: 70s Before Halloween Rain Oct 31
Davenport, IA – A stretch of unusually mild feeling late October afternoons will give way to increasing rain chances across the Quad Cities as the final week of October approaches Halloween. Temperatu
By Owen Prescott · 2026-10-25T10:03:31.300Z
Davenport, IA – A stretch of unusually mild feeling late October afternoons will give way to increasing rain chances across the Quad Cities as the final week of October approaches Halloween. Temperatures are expected to remain in the 70s through Saturday, but the first meaningful opportunity for showers arrives late Wednesday, Oct. 28, before additional rain chances develop Thursday and Saturday. The changing pattern could affect travel and outdoor activities in Davenport, Bettendorf, Moline and Rock Island, particularly as residents prepare for Halloween weekend.
According to the National Weather Service Quad Cities office, Wednesday will feature mostly sunny skies and an afternoon high near 76 degrees. Conditions should remain favorable for much of the day before clouds and rain chances begin increasing Wednesday night. The forecast introduces a 30% chance of showers after 1 a.m. Thursday, with temperatures falling to approximately 57 degrees.
Rain Chances Return After Several Mild Days Thursday, Oct. 29, brings a continuation of the unsettled pattern, although widespread rainfall is not guaranteed. The National Weather Service expects a 30% chance of showers before 1 p.m., followed by mostly sunny skies and temperatures reaching approximately 75 degrees. Another 30% chance of showers develops after 1 a.m. Friday, suggesting the region could experience several periods of scattered rainfall rather than one continuous rain event.
The timing matters for communities along the Mississippi River, where residents regularly travel between eastern Iowa and northwestern Illinois. Wet pavement could affect portions of Interstate 74, Interstate 80 and Interstate 280 if showers develop during commuting periods. However, the forecast does not indicate road closures, flooding or significant travel disruptions, and no specific rainfall accumulation totals were provided.
Temperatures Stay in the 70s Across the Quad Cities Despite the increasing rain chances, temperatures will remain relatively consistent throughout the week. Sunday, Oct. 25, is expected to reach approximately 77 degrees under partly sunny skies, followed by a high near 73 degrees Monday. Tuesday brings mostly cloudy conditions with another high near 73 degrees, while Wednesday climbs to approximately 76 degrees.
The overnight temperature pattern also remains mild, with lows ranging from the lower to upper 50s through Thursday night. Monday night is expected to be the coolest period in the immediate outlook, with temperatures near 51 degrees. No freezing temperatures, frost conditions or significant temperature drops appear in the supplied local forecast.
The broader NOAA Weather Prediction Center discussion describes a frontal system moving across the central United States early in the week, with rain developing over portions of the Central Plains and Upper Great Lakes. While the national outlook identifies excessive rainfall concerns farther west across parts of the High Plains and Rockies, those risk areas should not be interpreted as a specific flash flooding threat for the Quad Cities.
Halloween Weekend Could Bring Another Round of Showers Friday, Oct. 30, offers a potentially favorable period for outdoor activities, with partly sunny skies and temperatures reaching approximately 76 degrees. Friday night becomes mostly cloudy, with a low near 58 degrees, setting the stage for another change heading into Saturday.
Halloween, Saturday, Oct. 31, currently carries a 50% chance of showers, with mostly cloudy skies and an afternoon high near 73 degrees. That probability makes rain a consideration for outdoor celebrations, neighborhood events and trick or treating preparations across the Quad Cities.
However, the forecast does not establish whether showers will occur during evening trick or treating hours. Families planning outdoor activities should monitor updated forecasts as Saturday approaches, particularly for changes in rainfall timing and coverage.
Will the possibility of Halloween rain change your plans in Davenport, Moline or the surrounding Quad Cities?
Five Day Weather Outlook Sunday 10/25: Partly sunny skies are expected across the Quad Cities, with an afternoon high near 77 degrees and south winds around 5 mph; Sunday night becomes mostly cloudy, with temperatures falling to approximately 54 degrees.
Monday 10/26: Clouds gradually decrease throughout the day, giving way to mostly sunny skies and a high near 73 degrees; Monday night becomes mostly cloudy, with east winds around 5 mph and a low near 51 degrees.
Tuesday 10/27: Mostly cloudy skies dominate the afternoon, with temperatures reaching approximately 73 degrees; Tuesday night remains mostly cloudy, with temperatures falling to around 56 degrees and no precipitation probability specified.
Wednesday 10/28: Mostly sunny conditions are expected during the day, with an afternoon high near 76 degrees; Wednesday night becomes partly cloudy, with a low around 57 degrees and a 30% chance of showers after 1 a.m.
Thursday 10/29: A 30% chance of showers develops before 1 p.m., followed by mostly sunny skies and a high near 75 degrees; Thursday night turns partly cloudy, with a low near 56 degrees and another 30% chance of showers after 1 a.m.
Extended Weather Outlook Friday, Oct. 30: Partly sunny skies are expected, with a high near 76 degrees. Friday night becomes mostly cloudy, with a low around 58 degrees.
Saturday, Oct. 31 — Halloween: Mostly cloudy conditions are expected, with a 50% chance of showers and an afternoon high near 73 degrees.
The supplied National Weather Service forecast does not establish rainfall totals, thunderstorm probabilities or the precise timing of Saturday's showers.