National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Fair

79°F

26°C

Humidity 74%
Wind Speed E 9 mph
Barometer 29.89 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 11 Aug 2:45 pm CDT
Extended Forecast for

Sussex WI

  • This Afternoon

    This Afternoon: A slight chance of showers before 4pm, then a slight chance of showers after 5pm. Partly sunny, with a high near 80. Southeast wind around 5 mph. Chance of precipitation is 20%.

    High: 80 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 64. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Wednesday

    Wednesday: Areas of fog before 9am. Otherwise, partly sunny, with a high near 81. Calm wind becoming south around 5 mph.

    High: 81 °F

    Areas Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 62. South wind around 5 mph becoming calm.

    Low: 62 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 77. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 40%.

    High: 77 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 61. Northeast wind around 5 mph.

    Low: 61 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 75. Northeast wind 5 to 10 mph.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. East wind 5 to 10 mph. Chance of precipitation is 50%.

    Low: 62 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.

    High: 77 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A slight chance of showers before 4pm, then a slight chance of showers after 5pm. Partly sunny, with a high near 80. Southeast wind around 5 mph. Chance of precipitation is 20%.
Tonight
A slight chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 64. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Wednesday
Areas of fog before 9am. Otherwise, partly sunny, with a high near 81. Calm wind becoming south around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 62. South wind around 5 mph becoming calm.
Thursday
A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 77. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 40%.
Thursday Night
Partly cloudy, with a low around 61. Northeast wind around 5 mph.
Friday
Mostly sunny, with a high near 75. Northeast wind 5 to 10 mph.
Friday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. East wind 5 to 10 mph. Chance of precipitation is 50%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80.
Sunday Night
Partly cloudy, with a low around 61.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sussex WI
 43.14°N 88.21°W (Elev. 968 ft)
Last Update:
2:41 pm CDT Aug 11, 2026
Forecast Valid:
3pm CDT Aug 11, 2026-6pm CDT Aug 18, 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