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Hazardous Weather Conditions

Current conditions at

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Light Rain

61°F

16°C

Humidity 94%
Wind Speed S 6 mph
Barometer 29.68 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 14 Apr 9:35 pm CDT
Extended Forecast for

Sussex WI

Flash Flood Warning until April 14, 10:15pm
Click here for hazard details and duration
...
  •  
    Flash Flood Warning until April 14, 10:15pm

    NOW until 10:15pm Tue

    Flash Flood Warning

  • Tonight

    Low: 58 °F

    Severe
    Thunderstorms
    and Patchy
    Fog

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 70. South wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 70 °F

    Chance
    Showers and
    Patchy Fog
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 4am, then a chance of showers. Patchy fog between 10pm and 11pm. Low around 50. East wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 50 °F

    Showers and
    Patchy Fog

  • Thursday

    Thursday: A chance of showers before 7am, then a chance of showers and thunderstorms between 7am and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 65. East wind 5 to 10 mph becoming west in the morning. Chance of precipitation is 50%.

    High: 65 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48. Northeast wind around 5 mph becoming calm in the evening.

    Low: 48 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 71. Southeast wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.

    High: 71 °F

    Partly Sunny

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 50. Southwest wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 50 °F

    Showers
    Likely then
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Mostly cloudy, with a high near 62. Breezy, with a west wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 62 °F

    Showers
    Likely and
    Breezy

Detailed Forecast

Tonight
Showers and thunderstorms, mainly before 4am. Some of the storms could be severe. Patchy fog after 10pm. Low around 58. Southwest wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 70. South wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers and possibly a thunderstorm before 4am, then a chance of showers. Patchy fog between 10pm and 11pm. Low around 50. East wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
A chance of showers before 7am, then a chance of showers and thunderstorms between 7am and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 65. East wind 5 to 10 mph becoming west in the morning. Chance of precipitation is 50%.
Thursday Night
Partly cloudy, with a low around 48. Northeast wind around 5 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 71. Southeast wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.
Friday Night
Showers and possibly a thunderstorm. Low around 50. Southwest wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Mostly cloudy, with a high near 62. Breezy, with a west wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A slight chance of rain showers, mixing with snow after 10pm, then gradually ending. Mostly cloudy, with a low around 32. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 47.
Sunday Night
Mostly clear, with a low around 30.
Monday
Sunny, with a high near 53.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Mostly sunny, with a high near 63.
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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 14, 2026
Forecast Valid:
9pm CDT Apr 14, 2026-6pm CDT Apr 21, 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