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

9°C

48°F

Humidity 58%
Wind Speed SW 17 G 31 km/h
Barometer 29.65 in
Dewpoint 1°C (34°F)
Visibility 16 km
Wind Chill7°C (44°F)
Last update 9 Mar 7:45 am CDT
Extended Forecast for

Sussex WI

  • Today

    Today: Sunny, with a high near 19. West wind 20 to 25 km/h decreasing to 15 to 20 km/h in the afternoon.

    High: 19 °C

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 4. Northeast wind 5 to 10 km/h.

    Low: 4 °C

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 8. Northeast wind 10 to 20 km/h.

    High: 8 °C

    Partly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Areas of fog before 1am. Low around 1. Northeast wind 20 to 25 km/h. Chance of precipitation is 90%. New rainfall amounts between 5 and 7.5 mm possible.

    Low: 1 °C

    Showers and
    Areas Fog

  • Wednesday

    Wednesday: Rain and snow showers likely before 4pm, then a chance of snow showers. Cloudy, with a high near 4. North wind 20 to 30 km/h, with gusts as high as 40 km/h. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 4 °C

    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around -4. Northwest wind 10 to 20 km/h.

    Low: -4 °C

    Gradual
    Clearing

  • Thursday

    Thursday: Increasing clouds, with a high near 6. West wind 10 to 20 km/h becoming southwest in the afternoon.

    High: 6 °C

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Rain and snow. Low around 1. Breezy, with a south wind 15 to 25 km/h increasing to 25 to 35 km/h after midnight. Winds could gust as high as 50 km/h. Chance of precipitation is 80%. New precipitation amounts between 1 and 2.5 mm possible.

    Low: 1 °C

    Rain/Snow and
    Breezy

  • Friday

    Friday: A slight chance of rain and snow before 1pm. Partly sunny, with a high near 6. Breezy. Chance of precipitation is 20%.

    High: 6 °C

    Slight Chance
    Rain/Snow and
    Breezy

Detailed Forecast

Today
Sunny, with a high near 19. West wind 20 to 25 km/h decreasing to 15 to 20 km/h in the afternoon.
Tonight
Partly cloudy, with a low around 4. Northeast wind 5 to 10 km/h.
Tuesday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 8. Northeast wind 10 to 20 km/h.
Tuesday Night
Showers and possibly a thunderstorm. Areas of fog before 1am. Low around 1. Northeast wind 20 to 25 km/h. Chance of precipitation is 90%. New rainfall amounts between 5 and 7.5 mm possible.
Wednesday
Rain and snow showers likely before 4pm, then a chance of snow showers. Cloudy, with a high near 4. North wind 20 to 30 km/h, with gusts as high as 40 km/h. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around -4. Northwest wind 10 to 20 km/h.
Thursday
Increasing clouds, with a high near 6. West wind 10 to 20 km/h becoming southwest in the afternoon.
Thursday Night
Rain and snow. Low around 1. Breezy, with a south wind 15 to 25 km/h increasing to 25 to 35 km/h after midnight. Winds could gust as high as 50 km/h. Chance of precipitation is 80%. New precipitation amounts between 1 and 2.5 mm possible.
Friday
A slight chance of rain and snow before 1pm. Partly sunny, with a high near 6. Breezy. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around -3.
Saturday
A 40 percent chance of snow. Mostly cloudy, with a high near 6.
Saturday Night
Rain and snow likely. Cloudy, with a low around -1. Chance of precipitation is 60%.
Sunday
Rain and snow likely. Cloudy, with a high near 5. Breezy. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sussex WI
 43.14°N 88.24°W (Elev. 951 m)
Last Update:
6:49 am CDT Mar 9, 2026
Forecast Valid:
7am CDT Mar 9, 2026-6pm CDT Mar 15, 2026
 
Forecast Discussion
 
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Additional Resources

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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