National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

La Crosse - La Crosse Regional Airport (KLSE)

Lat: 43.88°NLon: 91.26°WElev: 653ft.

Fair

77°F

25°C

Humidity 85%
Wind Speed Calm
Barometer 29.84 in (1009.4 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 11 Aug 9:53 pm CDT
Extended Forecast for

Onalaska WI

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Partly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Areas of fog before 8am. Otherwise, partly sunny, with a high near 87. Calm wind becoming northeast around 5 mph.

    High: 87 °F

    Areas Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers before 3am, then a slight chance of showers after 4am. Increasing clouds, with a low around 66. Calm wind. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers before 1pm. Mostly cloudy, with a high near 82. Calm wind becoming east around 5 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.

    High: 82 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 63. Calm wind becoming east around 6 mph after midnight.

    Low: 63 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 81. East wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 62. Southeast wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    Low: 62 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Southeast wind around 8 mph becoming south in the afternoon. Chance of precipitation is 70%.

    High: 80 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. West wind around 6 mph becoming calm in the evening.

    Low: 66 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 68. Calm wind.
Wednesday
Areas of fog before 8am. Otherwise, partly sunny, with a high near 87. Calm wind becoming northeast around 5 mph.
Wednesday Night
A slight chance of showers before 3am, then a slight chance of showers after 4am. Increasing clouds, with a low around 66. Calm wind. Chance of precipitation is 20%.
Thursday
A 50 percent chance of showers before 1pm. Mostly cloudy, with a high near 82. Calm wind becoming east around 5 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Partly cloudy, with a low around 63. Calm wind becoming east around 6 mph after midnight.
Friday
Mostly sunny, with a high near 81. East wind 6 to 10 mph, with gusts as high as 18 mph.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 62. Southeast wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Southeast wind around 8 mph becoming south in the afternoon. Chance of precipitation is 70%.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. West wind around 6 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 81. Calm wind becoming northwest 5 to 8 mph in the morning.
Sunday Night
Partly cloudy, with a low around 60. Northwest wind around 6 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 79. Calm wind.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61. Calm wind.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. Calm wind becoming southwest 5 to 7 mph in the morning.
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ABOUT THIS FORECAST

 
Point Forecast:
Onalaska WI
 43.89°N 91.2°W
Last Update:
10:01 pm CDT Aug 11, 2026
Forecast Valid:
10pm CDT Aug 11, 2026-6pm CDT Aug 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation