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.

Partly Cloudy

18°F

-8°C

Humidity 86%
Wind Speed Calm
Barometer 30.38 in
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Last update 1 Mar 3:15 am CST
Extended Forecast for

Sussex WI

  • Overnight

    Overnight: Mostly cloudy, with a low around 15. North wind around 5 mph.

    Low: 15 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 30. North wind around 5 mph becoming east in the afternoon.

    High: 30 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 18. East wind around 5 mph becoming calm.

    Low: 18 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 40. South wind 5 to 10 mph.

    High: 40 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of rain after midnight, mixing with snow after 3am. Mostly cloudy, with a low around 30. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 30 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Tuesday

    Tuesday: Rain and snow likely, becoming all rain after 7am. Mostly cloudy, with a high near 41. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 41 °F

    Rain/Snow
    Likely then
    Chance Rain

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 33. Northeast wind around 5 mph.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of rain. Partly sunny, with a high near 43. East wind around 5 mph.

    High: 43 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Chance Rain

Detailed Forecast

Overnight
Mostly cloudy, with a low around 15. North wind around 5 mph.
Sunday
Mostly sunny, with a high near 30. North wind around 5 mph becoming east in the afternoon.
Sunday Night
Mostly clear, with a low around 18. East wind around 5 mph becoming calm.
Monday
Mostly sunny, with a high near 40. South wind 5 to 10 mph.
Monday Night
A chance of rain after midnight, mixing with snow after 3am. Mostly cloudy, with a low around 30. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Tuesday
Rain and snow likely, becoming all rain after 7am. Mostly cloudy, with a high near 41. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 70%. Little or no snow accumulation expected.
Tuesday Night
Mostly cloudy, with a low around 33. Northeast wind around 5 mph.
Wednesday
A 40 percent chance of rain. Partly sunny, with a high near 43. East wind around 5 mph.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 36.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 49.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 39.
Friday
Rain likely. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.
Friday Night
Rain likely. Mostly cloudy, with a low around 39. Chance of precipitation is 60%.
Saturday
A 40 percent chance of rain. Mostly cloudy, with a high near 54.
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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:
1:57 am CST Mar 1, 2026
Forecast Valid:
3am CST Mar 1, 2026-6pm CST Mar 7, 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