National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Areas of Severe Thunderstorms and Heavy Rain Possible through the Weekend

There will be daily chances for scattered thunderstorms across portions of the Central and Eastern U.S. through the weekend, with severe thunderstorms possible in the northern Plains and Upper Midwest. Potential severe storm hazards may include large hail, damaging winds, and a few tornadoes. Storms could also produce heavy rain that may lead to isolated instances of flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Fair

68°F

20°C

Humidity 83%
Wind Speed NW 6 mph
Barometer 29.98 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 27 Jun 10:35 pm CDT
Extended Forecast for

Sussex WI

  • Tonight

    Tonight: Mostly clear, with a low around 62. Northwest wind around 5 mph becoming calm after midnight.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 64. South wind around 5 mph.

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 89. Heat index values as high as 95. Southwest wind 5 to 10 mph.

    High: 89 °F

    Sunny then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Southwest wind around 5 mph.

    Low: 69 °F

    Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 84. West wind 5 to 10 mph.

    High: 84 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. West wind 5 to 10 mph.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84. West wind 10 to 15 mph.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 62. Northwest wind around 5 mph becoming calm after midnight.
Saturday
Sunny, with a high near 82. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 64. South wind around 5 mph.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 89. Heat index values as high as 95. Southwest wind 5 to 10 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Southwest wind around 5 mph.
Monday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 84. West wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 63. West wind 5 to 10 mph.
Tuesday
Sunny, with a high near 84. West wind 10 to 15 mph.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 63.
Thursday
A 40 percent chance of showers. Mostly sunny, with a high near 82.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Independence Day
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
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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:
10:24 pm CDT Jun 27, 2025
Forecast Valid:
10pm CDT Jun 27, 2025-6pm CDT Jul 4, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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