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 and Breezy

45°F

7°C

Humidity 49%
Wind Speed W 23 G 31 mph
Barometer 29.91 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 18 Apr 4:45 pm CDT
Extended Forecast for

Sussex WI

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 31. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.

    Low: 31 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: A slight chance of snow showers before 10am, then a slight chance of rain showers. Partly sunny, with a high near 46. Northwest wind 5 to 15 mph. Chance of precipitation is 20%.

    High: 46 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 28. Northwest wind 5 to 10 mph becoming light and variable in the evening.

    Low: 28 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 51. Light southeast wind becoming south 5 to 10 mph in the afternoon.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 39. South wind around 10 mph.

    Low: 39 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 70. West wind around 10 mph.

    High: 70 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42. West wind around 5 mph becoming northeast in the evening.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 66. Northeast wind 5 to 10 mph becoming east in the afternoon.

    High: 66 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 31. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Sunday
A slight chance of snow showers before 10am, then a slight chance of rain showers. Partly sunny, with a high near 46. Northwest wind 5 to 15 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 28. Northwest wind 5 to 10 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 51. Light southeast wind becoming south 5 to 10 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 39. South wind around 10 mph.
Tuesday
Mostly sunny, with a high near 70. West wind around 10 mph.
Tuesday Night
Partly cloudy, with a low around 42. West wind around 5 mph becoming northeast in the evening.
Wednesday
Sunny, with a high near 66. Northeast wind 5 to 10 mph becoming east in the afternoon.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Friday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 70.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 42.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 59.
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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:
4:46 pm CDT Apr 18, 2026
Forecast Valid:
5pm CDT Apr 18, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation