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

41°F

5°C

Humidity 61%
Wind Speed S 8 mph
Barometer 30.22 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 29 Mar 3:55 am CDT
Extended Forecast for

Sussex WI

  • Today

    Today: Mostly cloudy, with a high near 62. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 62 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly clear, with a low around 47. Southwest wind 5 to 10 mph.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 70. Southwest wind 5 to 10 mph.

    High: 70 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 51. South wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Chance
    T-storms then
    Rain Likely

  • Tuesday

    Tuesday: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 63. South wind 10 to 15 mph becoming west in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 63 °F

    Chance
    T-storms then
    Rain Likely

  • Tuesday Night

    Tuesday Night: A chance of rain and thunderstorms. Mostly cloudy, with a low around 32. Northwest wind 10 to 15 mph. Chance of precipitation is 40%.

    Low: 32 °F

    Chance
    T-storms then
    Chance Rain

  • Wednesday

    Wednesday: Partly sunny, with a high near 41. Northeast wind 10 to 15 mph.

    High: 41 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow, mainly after 1am. Mostly cloudy, with a low around 30. Northeast wind around 15 mph.

    Low: 30 °F

    Chance Snow

  • Thursday

    Thursday: A chance of snow before 10am, then a chance of rain and snow between 10am and 4pm, then a chance of rain after 4pm. Mostly cloudy, with a high near 40. Chance of precipitation is 50%.

    High: 40 °F

    Chance
    Rain/Snow

Detailed Forecast

Today
Mostly cloudy, with a high near 62. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 47. Southwest wind 5 to 10 mph.
Monday
Mostly sunny, with a high near 70. Southwest wind 5 to 10 mph.
Monday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 51. South wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 63. South wind 10 to 15 mph becoming west in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of rain and thunderstorms. Mostly cloudy, with a low around 32. Northwest wind 10 to 15 mph. Chance of precipitation is 40%.
Wednesday
Partly sunny, with a high near 41. Northeast wind 10 to 15 mph.
Wednesday Night
A 30 percent chance of snow, mainly after 1am. Mostly cloudy, with a low around 30. Northeast wind around 15 mph.
Thursday
A chance of snow before 10am, then a chance of rain and snow between 10am and 4pm, then a chance of rain after 4pm. Mostly cloudy, with a high near 40. Chance of precipitation is 50%.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 34.
Friday
A 20 percent chance of rain. Mostly cloudy, with a high near 48.
Friday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 38.
Saturday
Rain likely. Cloudy, with a high near 56. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Sussex WI
 43.14°N 88.24°W (Elev. 951 ft)
Last Update:
3:33 am CDT Mar 29, 2026
Forecast Valid:
4am CDT Mar 29, 2026-6pm CDT Apr 4, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation