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.

Mostly Cloudy

36°F

2°C

Humidity 81%
Wind Speed Calm
Barometer 30.24 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 19 Apr 9:55 pm CDT
Extended Forecast for

Sussex WI

  • Tonight

    Tonight: Widespread frost after 1am. Otherwise, mostly clear, with a low around 26. North wind around 5 mph becoming calm after midnight.

    Low: 26 °F

    Partly Cloudy
    then Frost

  • Monday

    Monday: Widespread frost before 8am. Otherwise, sunny, with a high near 51. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 51 °F

    Frost then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 40. South wind around 10 mph.

    Low: 40 °F

    Partly Cloudy

  • Tuesday

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

    High: 70 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42. West wind around 5 mph becoming northeast after midnight.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 67. Northeast wind 5 to 10 mph becoming southeast in the afternoon.

    High: 67 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50. South wind around 5 mph.

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 77. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 77 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.

    Low: 58 °F

    Showers
    Likely

Detailed Forecast

Tonight
Widespread frost after 1am. Otherwise, mostly clear, with a low around 26. North wind around 5 mph becoming calm after midnight.
Monday
Widespread frost before 8am. Otherwise, sunny, with a high near 51. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 40. South wind around 10 mph.
Tuesday
Mostly sunny, with a high near 70. Southwest wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 42. West wind around 5 mph becoming northeast after midnight.
Wednesday
Sunny, with a high near 67. Northeast wind 5 to 10 mph becoming southeast in the afternoon.
Wednesday Night
Mostly clear, with a low around 50. South wind around 5 mph.
Thursday
Mostly sunny, with a high near 77. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 68.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 44.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 61.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 41.
Sunday
A 20 percent chance of showers. Partly sunny, with a high near 59.
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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 ft)
Last Update:
8:37 pm CDT Apr 19, 2026
Forecast Valid:
10pm CDT Apr 19, 2026-6pm CDT Apr 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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