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.

Mostly Cloudy

28°F

-2°C

Humidity 93%
Wind Speed E 6 mph
Barometer 30.33 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 24 Dec 6:45 am CST
Extended Forecast for

Lannon WI

  • Today

    Today: Patchy drizzle after 4pm. Mostly cloudy, with a high near 40. Southeast wind 5 to 10 mph.

    High: 40 °F

    Mostly Cloudy
    then Patchy
    Drizzle

  • Tonight

    Tonight: Areas of drizzle before midnight. Cloudy, with a low around 32. Light and variable wind becoming north 5 to 10 mph after midnight.

    Low: 32 °F

    Areas Drizzle
    then Mostly
    Cloudy

  • Christmas Day

    Christmas Day: Mostly cloudy, with a high near 37. Northeast wind 5 to 15 mph.

    High: 37 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Rain likely after midnight. Cloudy, with a low around 33. Southeast wind around 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 33 °F

    Cloudy then
    Rain Likely

  • Friday

    Friday: A 50 percent chance of rain before noon. Cloudy, with a high near 43. Southeast wind 5 to 10 mph becoming northwest in the afternoon.

    High: 43 °F

    Chance Rain
    then Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 33. Northwest wind around 5 mph becoming calm.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 44. Calm wind becoming southeast around 5 mph in the morning.

    High: 44 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 20 percent chance of rain. Cloudy, with a low around 28. Southeast wind 5 to 15 mph becoming northwest after midnight.

    Low: 28 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Partly sunny, with a temperature falling to around 22 by 5pm. Windy.

    High: 36 °F⇓

    Windy. Mostly
    Cloudy then
    Slight Chance
    Snow

Detailed Forecast

Today
Patchy drizzle after 4pm. Mostly cloudy, with a high near 40. Southeast wind 5 to 10 mph.
Tonight
Areas of drizzle before midnight. Cloudy, with a low around 32. Light and variable wind becoming north 5 to 10 mph after midnight.
Christmas Day
Mostly cloudy, with a high near 37. Northeast wind 5 to 15 mph.
Thursday Night
Rain likely after midnight. Cloudy, with a low around 33. Southeast wind around 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 50 percent chance of rain before noon. Cloudy, with a high near 43. Southeast wind 5 to 10 mph becoming northwest in the afternoon.
Friday Night
Mostly cloudy, with a low around 33. Northwest wind around 5 mph becoming calm.
Saturday
Mostly cloudy, with a high near 44. Calm wind becoming southeast around 5 mph in the morning.
Saturday Night
A 20 percent chance of rain. Cloudy, with a low around 28. Southeast wind 5 to 15 mph becoming northwest after midnight.
Sunday
A 20 percent chance of snow after noon. Partly sunny, with a temperature falling to around 22 by 5pm. Windy.
Sunday Night
Mostly cloudy, with a low around 7. Windy.
Monday
Mostly sunny, with a high near 17. Blustery.
Monday Night
Partly cloudy, with a low around 9.
Tuesday
Partly sunny, with a high near 22.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lannon WI
 43.14°N 88.18°W (Elev. 912 ft)
Last Update:
6:36 am CST Dec 24, 2025
Forecast Valid:
7am CST Dec 24, 2025-6pm CST Dec 30, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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