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

Hazardous Weather Conditions

Current conditions at

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Mostly Cloudy

25°F

-4°C

Humidity 86%
Wind Speed Calm
Barometer 30.07 in
Dewpoint 21°F (-6°C)
Visibility 7.00 mi
Last update 1 Dec 7:45 pm CST
Extended Forecast for

Lannon WI

  • Tonight

    Tonight: Snow, mainly before 11pm. Low around 12. Southwest wind around 5 mph becoming northwest after midnight. Chance of precipitation is 90%. Total nighttime snow accumulation of less than one inch possible.

    Low: 12 °F

    Snow then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 24. West wind 5 to 10 mph.

    High: 24 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 16. Southwest wind 10 to 15 mph.

    Low: 16 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Wednesday

    Wednesday: Snow likely, mainly before noon. Cloudy, with a high near 30. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 30 °F

    Snow Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -1. Northwest wind around 10 mph.

    Low: -1 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 11. Northwest wind 5 to 10 mph.

    High: 11 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -2. Southwest wind 5 to 10 mph.

    Low: -2 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of snow after noon. Partly sunny, with a high near 22. Southwest wind around 10 mph.

    High: 22 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Friday Night

    Friday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 15.

    Low: 15 °F

    Slight Chance
    Snow then
    Mostly Cloudy

Detailed Forecast

Tonight
Snow, mainly before 11pm. Low around 12. Southwest wind around 5 mph becoming northwest after midnight. Chance of precipitation is 90%. Total nighttime snow accumulation of less than one inch possible.
Tuesday
Partly sunny, with a high near 24. West wind 5 to 10 mph.
Tuesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 16. Southwest wind 10 to 15 mph.
Wednesday
Snow likely, mainly before noon. Cloudy, with a high near 30. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Wednesday Night
Partly cloudy, with a low around -1. Northwest wind around 10 mph.
Thursday
Sunny, with a high near 11. Northwest wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around -2. Southwest wind 5 to 10 mph.
Friday
A 20 percent chance of snow after noon. Partly sunny, with a high near 22. Southwest wind around 10 mph.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 15.
Saturday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 26.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 12.
Sunday
A 20 percent chance of snow. Partly sunny, with a high near 23.
Sunday Night
A 20 percent chance of snow. Partly cloudy, with a low around 4.
Monday
A 20 percent chance of snow. Partly sunny, with a high near 23.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lannon WI
 43.14°N 88.18°W (Elev. 912 ft)
Last Update:
7:37 pm CST Dec 1, 2025
Forecast Valid:
8pm CST Dec 1, 2025-6pm CST Dec 8, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation