Weather in Onalaska, WI
Updated 2026-09-26 10:00 local time · ZIP codes 54650
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
56°15% rain58°14% rain59°14% rain62°13% rain61°15% rain61°16% rain59°17% rain60°18% rain60°19% rain
60°20% rain58°21% rain
57°18% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 21%).
It feels like 49°F with winds near 10 mph.
62°F, 13% rain chance and 9 mph wind.
Visibility is around 6 mi; gusts may reach 18 mph.
Current temperature is 56°F, wind 10 mph, rain chance up to 21%.
UV index is 2.
Local weather characteristics in Onalaska
Wisconsin has warm summers, cold winters and strong Great Lakes influence near Lakes Michigan and Superior. Lake-effect snow can be important in favored areas.
Onalaska is part of the Midwest weather region. The forecast point is near 43.88°N latitude and 91.23°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Onalaska weather today
Overcast and 56°F in Onalaska, WI. Today's high is 62°F with a 20% rain chance. Winds are around 10 mph with gusts near 17 mph. Relative humidity is 62%, pressure is 30.21 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Onalaska
Sunrise is at 06:56 AM and sunset is at 06:55 PM. Tomorrow's forecast calls for Overcast with a high near 66°F and a low near 56°F. The maximum rain chance is 16%.