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

54°F

12°C

Humidity 63%
Wind Speed N 9 mph
Barometer 30.28 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 20 May 8:45 am CDT
Extended Forecast for

Hartland WI

  • Today

    Today: Mostly sunny, with a high near 60. East wind 5 to 10 mph.

    High: 60 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. Northeast wind 5 to 10 mph.

    Low: 40 °F

    Mostly Cloudy

  • Thursday

    Thursday: Increasing clouds, with a high near 57. East wind around 10 mph.

    High: 57 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 44. East wind 5 to 10 mph.

    Low: 44 °F

    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of showers after 1pm. Mostly cloudy, with a high near 61. East wind 10 to 15 mph.

    High: 61 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then showers likely after 1am. Cloudy, with a low around 48. East wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly cloudy, with a high near 67. Northeast wind 5 to 10 mph.

    High: 67 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 51. Northeast wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 60. East wind 5 to 10 mph.
Tonight
Mostly cloudy, with a low around 40. Northeast wind 5 to 10 mph.
Thursday
Increasing clouds, with a high near 57. East wind around 10 mph.
Thursday Night
Mostly cloudy, with a low around 44. East wind 5 to 10 mph.
Friday
A 40 percent chance of showers after 1pm. Mostly cloudy, with a high near 61. East wind 10 to 15 mph.
Friday Night
Showers likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then showers likely after 1am. Cloudy, with a low around 48. East wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Mostly cloudy, with a high near 67. Northeast wind 5 to 10 mph.
Saturday Night
Mostly cloudy, with a low around 51. Northeast wind around 5 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 52.
Memorial Day
Mostly sunny, with a high near 79.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 81.
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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:
8:52 am CDT May 20, 2026
Forecast Valid:
9am CDT May 20, 2026-6pm CDT May 26, 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