La Crosse, Wis. – Labor Day will bring sunshine and warm air to western Wisconsin, but storm chances build quickly by Tuesday. Drivers along I-90 should be alert to changing conditions as cool air sweeps in after the holiday heat.
According to the National Weather Service in La Crosse, Monday will be mostly sunny with highs near 76°F and calm winds, creating ideal conditions for outdoor gatherings. But forecasters warn that storm potential increases Tuesday afternoon and evening, with a 50 percent chance of thunderstorms lasting into the night. Heavy downpours and gusty winds are possible, particularly across La Crosse County and surrounding river valleys.
The shift from warm holiday weather to stormy skies could complicate post-Labor Day travel. Commuters using I-90, U.S. Highway 53, and local routes near Onalaska and Holmen should prepare for slick roads and brief visibility issues if storms develop. Residents are urged to charge devices, secure outdoor items, and avoid unnecessary driving during peak storm hours Tuesday evening.
By Wednesday, temperatures will dip into the mid-60s under cloudy skies, with lingering rain chances into the morning. Cooler, drier air will dominate the region by midweek, leaving La Crosse with crisp September mornings in the 40s by Thursday. Sunshine returns late in the week, offering a calmer stretch heading into next weekend.
Cooler air and clearer skies later in the week will be a welcome change, but storm risks through Tuesday night demand attention. More updates and advisories could be issued if storm intensity strengthens.
Five-Day Forecast for La Crosse, Wisconsin:
- Monday (Labor Day): Sunny, high 76°F, low 54°F.
- Tuesday: 20% chance of showers after 1 p.m., high 77°F, 50% chance of thunderstorms at night, low 57°F.
- Wednesday: Showers likely, high 65°F, low 42°F.
- Thursday: Mostly sunny, high 70°F, low 46°F.
- Friday: Partly sunny, high 86°F, low 60°F.
