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

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Fair

46°F

8°C

Humidity 37%
Wind Speed SE 8 mph
Barometer 30.23 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 24 Mar 7:45 pm CDT
Extended Forecast for

Lannon WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 34. Southeast wind around 5 mph.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 64. Southwest wind 5 to 15 mph, with gusts as high as 30 mph.

    High: 64 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 48. Southwest wind 5 to 10 mph.

    Low: 48 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of rain after 1pm. Partly sunny, with a high near 65. Southwest wind 5 to 15 mph becoming north in the afternoon.

    High: 65 °F

    Partly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 26. North wind 10 to 15 mph.

    Low: 26 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 40. North wind around 10 mph.

    High: 40 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26. West wind around 5 mph.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 51. West wind 5 to 15 mph.

    High: 51 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 34. Southeast wind around 5 mph.
Wednesday
Partly sunny, with a high near 64. Southwest wind 5 to 15 mph, with gusts as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 48. Southwest wind 5 to 10 mph.
Thursday
A 30 percent chance of rain after 1pm. Partly sunny, with a high near 65. Southwest wind 5 to 15 mph becoming north in the afternoon.
Thursday Night
Mostly cloudy, with a low around 26. North wind 10 to 15 mph.
Friday
Mostly sunny, with a high near 40. North wind around 10 mph.
Friday Night
Mostly clear, with a low around 26. West wind around 5 mph.
Saturday
Sunny, with a high near 51. West wind 5 to 15 mph.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Partly sunny, with a high near 57.
Sunday Night
Partly cloudy, with a low around 41.
Monday
Partly sunny, with a high near 62.
Monday Night
A 30 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 43.
Tuesday
A 30 percent chance of rain. Mostly cloudy, with a high near 56.
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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:
7:34 pm CDT Mar 24, 2026
Forecast Valid:
8pm CDT Mar 24, 2026-6pm CDT Mar 31, 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