Extreme Heat in the Southwest; Severe Weather in the Northern Plains; Heavy Rain in the East

Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >

Hazardous Weather Conditions

Current conditions at

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Fair

61°F

16°C

Humidity 94%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 3 Aug 6:45 am CDT
Extended Forecast for

Sussex WI

  • Today

    Today: Sunny, with a high near 80. Calm wind becoming southeast around 5 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. Southeast wind around 5 mph becoming calm  in the evening.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. Southwest wind 5 to 10 mph.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am.  Low around 63. Southwest wind around 5 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Chance
    T-storms then
    Showers

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 1pm.  Mostly cloudy, with a high near 76. Calm wind becoming southeast around 5 mph.  Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 76 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 58. Calm wind.  Chance of precipitation is 50%.

    Low: 58 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers before 1pm.  Partly sunny, with a high near 78. Calm wind becoming northeast around 5 mph.

    High: 78 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 80. Calm wind becoming southeast around 5 mph.
Tonight
Mostly clear, with a low around 58. Southeast wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 83. Southwest wind 5 to 10 mph.
Tuesday Night
A chance of showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 63. Southwest wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. Calm wind becoming southeast around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Calm wind. Chance of precipitation is 50%.
Thursday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 78. Calm wind becoming northeast around 5 mph.
Thursday Night
Mostly clear, with a low around 58. Calm wind.
Friday
Mostly sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 62.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 65.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Sussex WI
 43.14°N 88.24°W (Elev. 951 ft)
7:02 am CDT Aug 3, 2026
7am CDT Aug 3, 2026-6pm CDT Aug 9, 2026
 
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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