Wisconsin Weather Alert: La Crosse Drivers Warned of Storm Risks September 17 on I-90

LA CROSSE, Wis. — Residents in western Wisconsin should be on alert Wednesday, September 17, as storms return to the region, raising travel risks on Interstate 90 and surrounding roadways. The National Weather Service in La Crosse warns of a 30 percent chance of showers and thunderstorms beginning mid-morning, with stronger cells possible after 1 p.m.
Afternoon Storms and Travel Concerns
Daytime highs will reach 85 degrees before conditions cool into the low 60s overnight. The main risks include slick pavement, heavy downpours, and isolated lightning during the evening commute. Local emergency officials advise drivers to limit nonessential travel, allow extra time on I-90, and keep mobile devices charged in case of weather-related power outages.
Communities across La Crosse County and neighboring Onalaska may see sudden bursts of rainfall, reducing visibility for drivers. Outdoor plans should be flexible Wednesday evening, as showers and storms could develop quickly and last into early Thursday.
Late-Week Weather Pattern
By Thursday, unsettled weather continues with isolated storms through the evening and highs near 83 degrees. A shift arrives Friday, when cooler air drops highs to around 76 degrees under a persistent southeast wind. Rain may linger, but drier conditions return heading into the weekend.
Saturday is expected to bring partly sunny skies with highs around 75, offering a seasonal break for outdoor activities. Sunday and Monday will remain mild, though additional storm chances may interrupt late-weekend plans.
Five-Day Forecast for La Crosse
- Wednesday: Showers and storms possible after 10 a.m., high 85; low 61.
- Thursday: Isolated storms through evening, high 83; low 61.
- Friday: Showers possible, high 76; low 60.
- Saturday: Partly sunny, high 75; low 59.
- Sunday: Slight storm chance, high 77; low 61.
Residents across La Crosse and western Wisconsin should remain alert for changing conditions, especially those planning travel along I-90. Stay connected with ChicagoMusicGuide.com for more weather alerts and regional updates.