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Hazardous Weather Conditions

Current conditions at

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Overcast

64°F

18°C

Humidity 83%
Wind Speed E 5 mph
Barometer 29.97 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 28 Jun 6:45 am CDT
Extended Forecast for

Sussex WI

Extreme Heat Watch June 29, 12:00pm until June 30, 08:00am
Click here for hazard details and duration
Extreme Heat Watch

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 79. Southeast wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.

    High: 79 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms, mainly between 3am and 4am. Mostly cloudy, with a low around 68. Southeast wind 10 to 15 mph.

    Low: 68 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Mostly sunny and hot, with a high near 93. Heat index values as high as 103. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. Southwest wind 10 to 15 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 94. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 94 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 75. Southwest wind 10 to 15 mph.

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 94. Southwest wind 10 to 15 mph.

    High: 94 °F

    Hot

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly clear, with a low around 73. Southwest wind 5 to 10 mph.

    Low: 73 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 93.

    High: 93 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 79. Southeast wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.
Tonight
A 20 percent chance of showers and thunderstorms, mainly between 3am and 4am. Mostly cloudy, with a low around 68. Southeast wind 10 to 15 mph.
Monday
Mostly sunny and hot, with a high near 93. Heat index values as high as 103. South wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 74. Southwest wind 10 to 15 mph.
Tuesday
Sunny and hot, with a high near 94. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 75. Southwest wind 10 to 15 mph.
Wednesday
Sunny and hot, with a high near 94. Southwest wind 10 to 15 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly clear, with a low around 73. Southwest wind 5 to 10 mph.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 93.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 93.
Friday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Independence Day
A 30 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 90.
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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:
6:26 am CDT Jun 28, 2026
Forecast Valid:
7am CDT Jun 28, 2026-6pm CDT Jul 4, 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