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

16°F

-9°C

Humidity 79%
Wind Speed Calm
Barometer 29.87 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Last update 25 Feb 11:55 pm CST
Extended Forecast for

Sussex WI

  • Overnight

    Overnight: Mostly clear, with a low around 15. Calm wind.

    Low: 15 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 40. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 40 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 30. Southwest wind 5 to 10 mph.

    Low: 30 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 57. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 57 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 24. West wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 24 °F

    Partly Cloudy

  • Saturday

    Saturday: A 50 percent chance of snow. Mostly cloudy, with a high near 29. Northwest wind around 10 mph.

    High: 29 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 13. North wind around 5 mph.

    Low: 13 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Sunday

    Sunday: Increasing clouds, with a high near 26. Northeast wind 5 to 10 mph.

    High: 26 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 16.

    Low: 16 °F

    Slight Chance
    Snow then
    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 15. Calm wind.
Thursday
Mostly sunny, with a high near 40. Light southwest wind increasing to 5 to 10 mph in the morning.
Thursday Night
Partly cloudy, with a low around 30. Southwest wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 57. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Friday Night
Partly cloudy, with a low around 24. West wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 29. Northwest wind around 10 mph.
Saturday Night
A 20 percent chance of snow before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 13. North wind around 5 mph.
Sunday
Increasing clouds, with a high near 26. Northeast wind 5 to 10 mph.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 16.
Monday
Mostly sunny, with a high near 34.
Monday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 22.
Tuesday
A 30 percent chance of snow. Mostly sunny, with a high near 40.
Tuesday Night
Mostly clear, with a low around 25.
Wednesday
Sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sussex WI
 43.14°N 88.24°W (Elev. 951 ft)
Last Update:
11:52 pm CST Feb 25, 2026
Forecast Valid:
12am CST Feb 26, 2026-6pm CST Mar 4, 2026
 
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