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

Hazardous Weather Conditions

Current conditions at

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Overcast

36°F

2°C

Humidity 93%
Wind Speed Calm
Barometer 29.93 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 26 Dec 7:45 pm CST
Extended Forecast for

Sussex WI

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, cloudy, with a low around 33. Northwest wind around 5 mph becoming calm in the evening.

    Low: 33 °F

    Cloudy then
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 11am, then patchy fog after 5pm. Otherwise, cloudy, with a high near 41. Southeast wind 5 to 10 mph.

    High: 41 °F

    Patchy Fog

  • Saturday Night

    Saturday Night: A 50 percent chance of rain. Patchy fog before 1am. Otherwise, cloudy, with a low around 38. Southeast wind 5 to 10 mph.

    Low: 38 °F

    Chance Rain
    and Patchy
    Fog

  • Sunday

    Sunday: Rain, mainly after noon. High near 46. Southeast wind 5 to 10 mph becoming north in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 46 °F

    Chance Rain
    then Rain

  • Sunday Night

    Sunday Night: Rain likely before 9pm, then rain and snow likely between 9pm and midnight, then snow likely after midnight. Cloudy, with a low around 18. Windy, with a west wind 10 to 15 mph increasing to 20 to 25 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 18 °F

    Rain/Snow
    Likely and
    Blustery then
    Snow Likely
    and Windy

  • Monday

    Monday: A 50 percent chance of snow before noon. Mostly cloudy, with a high near 22. Windy, with a northwest wind 20 to 25 mph, with gusts as high as 40 mph.

    High: 22 °F

    Windy. Chance
    Snow then
    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 11. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 11 °F

    Partly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of snow after noon. Increasing clouds, with a high near 25. West wind around 15 mph.

    High: 25 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 15.

    Low: 15 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, cloudy, with a low around 33. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Patchy fog before 11am, then patchy fog after 5pm. Otherwise, cloudy, with a high near 41. Southeast wind 5 to 10 mph.
Saturday Night
A 50 percent chance of rain. Patchy fog before 1am. Otherwise, cloudy, with a low around 38. Southeast wind 5 to 10 mph.
Sunday
Rain, mainly after noon. High near 46. Southeast wind 5 to 10 mph becoming north in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain likely before 9pm, then rain and snow likely between 9pm and midnight, then snow likely after midnight. Cloudy, with a low around 18. Windy, with a west wind 10 to 15 mph increasing to 20 to 25 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Monday
A 50 percent chance of snow before noon. Mostly cloudy, with a high near 22. Windy, with a northwest wind 20 to 25 mph, with gusts as high as 40 mph.
Monday Night
Partly cloudy, with a low around 11. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
A 20 percent chance of snow after noon. Increasing clouds, with a high near 25. West wind around 15 mph.
Tuesday Night
Mostly cloudy, with a low around 15.
Wednesday
Partly sunny, with a high near 22.
Wednesday Night
A 20 percent chance of snow. Partly cloudy, with a low around 1.
New Year's Day
Sunny and cold, with a high near 10.
Thursday Night
Mostly clear, with a low around 0.
Friday
Mostly sunny, with a high near 15.
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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:
7:43 pm CST Dec 26, 2025
Forecast Valid:
7pm CST Dec 26, 2025-6pm CST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation