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.

Partly Cloudy

63°F

17°C

Humidity 60%
Wind Speed SW 12 mph
Barometer 29.89 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 21 Apr 11:45 am CDT
Extended Forecast for

Hartland WI

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm before 1pm. Mostly sunny, with a high near 73. West wind 10 to 15 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Showers
    Likely

  • Tonight

    Tonight: Mostly clear, with a low around 43. Calm wind becoming northeast around 5 mph after midnight.

    Low: 43 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70. East wind around 5 mph.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51. Southeast wind around 5 mph.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 78. South wind 5 to 15 mph.

    High: 78 °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 60. South wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 72. South wind around 10 mph becoming west in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 72 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 45. Northwest wind 5 to 10 mph.

    Low: 45 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm before 1pm. Mostly sunny, with a high near 73. West wind 10 to 15 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Mostly clear, with a low around 43. Calm wind becoming northeast around 5 mph after midnight.
Wednesday
Sunny, with a high near 70. East wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 51. Southeast wind around 5 mph.
Thursday
Mostly sunny, with a high near 78. 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 60. South wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 72. South wind around 10 mph becoming west in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 45. Northwest wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 63.
Saturday Night
Mostly cloudy, with a low around 42.
Sunday
Mostly sunny, with a high near 63.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 45.
Monday
A 50 percent chance of showers. Mostly cloudy, with a high near 61.
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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:
11:51 am CDT Apr 21, 2026
Forecast Valid:
12pm CDT Apr 21, 2026-6pm CDT Apr 27, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation