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.

Mostly Cloudy

77°F

25°C

Humidity 83%
Wind Speed SE 9 mph
Barometer 30.02 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 15 Aug 6:45 pm CDT
Extended Forecast for

Hartland WI

  • Tonight

    Tonight: A chance of rain and thunderstorms before 2am, then a chance of showers and thunderstorms between 2am and 4am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 69. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 69 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers before noon, then a slight chance of showers and thunderstorms between noon and 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 82. Northwest wind 5 to 15 mph. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 60. Northwest wind 5 to 10 mph becoming light north after midnight.

    Low: 60 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 79. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. West wind around 5 mph becoming calm.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. West wind 5 to 10 mph.

    High: 81 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 61. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 61 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 75. Calm wind becoming north around 5 mph in the morning.

    High: 75 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of rain and thunderstorms before 2am, then a chance of showers and thunderstorms between 2am and 4am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 69. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Sunday
A slight chance of showers before noon, then a slight chance of showers and thunderstorms between noon and 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 82. Northwest wind 5 to 15 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 60. Northwest wind 5 to 10 mph becoming light north after midnight.
Monday
Sunny, with a high near 79. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 61. West wind around 5 mph becoming calm.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. West wind 5 to 10 mph.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 61. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 75. Calm wind becoming north around 5 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
Partly cloudy, with a low around 57.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 77.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 59.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 78.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hartland WI
 43.12°N 88.36°W (Elev. 932 ft)
Last Update:
6:01 pm CDT Aug 15, 2026
Forecast Valid:
7pm CDT Aug 15, 2026-6pm CDT Aug 22, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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