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

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Fair

52°F

11°C

Humidity 35%
Wind Speed S 14 mph
Barometer 30.21 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 20 Apr 4:45 pm CDT
Extended Forecast for

Hartland WI

  • Tonight

    Tonight: Partly cloudy, with a low around 42. South wind 5 to 10 mph.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 73. West wind 5 to 10 mph.

    High: 73 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42. East wind around 5 mph becoming calm.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 68. East wind around 5 mph.

    High: 68 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 49. Southeast wind around 5 mph.

    Low: 49 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 77. South wind 5 to 15 mph.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. South wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 71. South wind around 10 mph becoming west in the afternoon. Chance of precipitation is 50%.

    High: 71 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 44.

    Low: 44 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 42. South wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 73. West wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 42. East wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 68. East wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 49. Southeast wind around 5 mph.
Thursday
Mostly sunny, with a high near 77. South wind 5 to 15 mph.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. South wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 71. South wind around 10 mph becoming west in the afternoon. Chance of precipitation is 50%.
Friday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 63.
Saturday Night
Mostly cloudy, with a low around 43.
Sunday
A 20 percent chance of showers. Partly sunny, with a high near 60.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 42.
Monday
A 30 percent chance of showers. Mostly cloudy, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hartland WI
 43.1°N 88.36°W (Elev. 1001 ft)
Last Update:
2:36 pm CDT Apr 20, 2026
Forecast Valid:
5pm CDT Apr 20, 2026-6pm CDT Apr 27, 2026
 
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