Extreme Heat Across the Southern U.S.; Severe Thunderstorms and Heavy Rain in the Northern Plains and Upper Midwest

Dangerous heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms will produce damaging winds and heavy rainfall over portions of the northern/central Plains into the mid/upper-Mississippi Valleys today. Read More >

Current conditions at

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Fair

84°F

29°C

Humidity 45%
Wind Speed SW 7 mph
Barometer 30.03 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 30 Jul 12:45 pm CDT
Extended Forecast for

Sussex WI

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 87. Southwest wind around 5 mph.

    High: 87 °F

    Partly Sunny

  • Tonight

    Tonight: Patchy smoke before 10pm. Mostly cloudy, with a low around 64. Southwest wind around 5 mph becoming calm  in the evening.

    Low: 64 °F

    Patchy Smoke
    then Mostly
    Cloudy

  • Friday

    Friday: A slight chance of showers, with thunderstorms also possible after 4pm.  Mostly cloudy, with a high near 81. Light and variable wind becoming southeast 5 to 10 mph in the morning.  Chance of precipitation is 20%.

    High: 81 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am.  Low around 62. East wind 5 to 15 mph.  Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Low: 62 °F

    Showers

  • Saturday

    Saturday: Showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm.  High near 74. Northeast wind around 15 mph.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 74 °F

    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 59. North wind around 10 mph.

    Low: 59 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 76. North wind 10 to 15 mph.

    High: 76 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55. Northeast wind 5 to 10 mph becoming light  after midnight.

    Low: 55 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 87. Southwest wind around 5 mph.
Tonight
Patchy smoke before 10pm. Mostly cloudy, with a low around 64. Southwest wind around 5 mph becoming calm in the evening.
Friday
A slight chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 81. Light and variable wind becoming southeast 5 to 10 mph in the morning. Chance of precipitation is 20%.
Friday Night
Showers and thunderstorms likely before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 62. East wind 5 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Saturday
Showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. High near 74. Northeast wind around 15 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Mostly cloudy, with a low around 59. North wind around 10 mph.
Sunday
Mostly sunny, with a high near 76. North wind 10 to 15 mph.
Sunday Night
Mostly clear, with a low around 55. Northeast wind 5 to 10 mph becoming light after midnight.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Sunny, with a high near 83.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Sussex WI
 43.14°N 88.21°W (Elev. 968 ft)
1:34 pm CDT Jul 30, 2026
1pm CDT Jul 30, 2026-6pm CDT Aug 5, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database