National Weather Service United States Department of Commerce

Outside of gradually diminishing winds today, the forecast is looking favorable for travel across Iowa leading up to and through Thanksgiving Day. It will also be colder today with highs ranging in the 30s. Thanksgiving Day will remain cold with similar highs, but with much less wind. Post-Thanksgiving travel still looks to be impacted as a wintry system moves in on Friday into the weekend.
The likelihood of moderate winter impacts is increasing for late Friday through Saturday night over a good portion of central and eastern Iowa including and north of roughly I-80. Conditions may become hazardous, requiring extra caution while driving, and infrastructure disruptions are possible. Probabilities for these impacts in these areas is 60% or higher. Please continue to monitor the forecast for updates if you have post-Thanksgiving travel plans.
The potential for a winter storm is increasing, with impactful snow accumulation likely from late Friday through Saturday night. The highest potential for travel impacts will occur during this timeframe, though impacts may linger into Sunday after the snow ends. Snow amounts and travel impacts have trended potentially more significant, though the snow may still mix with rain at times over southern Iowa on Saturday lowering snow amounts in those areas. Continue to monitor the forecast for updates.
It is look likely for a widespread, impactful snow accumulation from late Friday through Saturday night. Accumulations of at least 4 inches are likely across the northern two-thirds of the state with a 60-75% chance of exceeding 8 inches of snow across northern Iowa. Please plan ahead for potential holiday travel disruptions and stay tuned for forecast updates.