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

Strong to Severe Thunderstorms in the East; Heat in the Central and Western U.S.

Strong to potentially severe thunderstorms with damaging wind gusts are forecast Thursday from parts of New England into the Mid Atlantic and Carolinas. Significant heat will expand across the West and Central Plains through Friday, potentially breaking daily high temperature records. Dangerous heat will then build into the Eastern U.S. this weekend through much of next week. Read More >

Hazardous Weather Conditions

Current conditions at

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

Fair

68°F

20°C

Humidity 78%
Wind Speed SW 6 mph
Barometer 29.95 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 20 Jun 5:15 am CDT
Extended Forecast for

2 Miles SE Merton WI

Heat Advisory June 21, 12:00pm until June 23, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Showers likely before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm. Partly sunny, with a high near 82. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Showers
    Likely then
    Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 72. South wind 5 to 10 mph.

    Low: 72 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny and hot, with a high near 92. Heat index values as high as 100. Windy, with a southwest wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 92 °F

    Hot and Windy

  • Saturday Night

    Saturday Night: Clear, with a low around 77. Southwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 77 °F

    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 93. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76. Southwest wind around 15 mph.

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers after 1pm. Sunny and hot, with a high near 93. Southwest wind around 15 mph.

    High: 93 °F

    Sunny then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. West wind 5 to 10 mph.

    Low: 69 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Showers likely before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm. Partly sunny, with a high near 82. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Partly cloudy, with a low around 72. South wind 5 to 10 mph.
Saturday
Sunny and hot, with a high near 92. Heat index values as high as 100. Windy, with a southwest wind 15 to 25 mph, with gusts as high as 35 mph.
Saturday Night
Clear, with a low around 77. Southwest wind around 15 mph, with gusts as high as 25 mph.
Sunday
Sunny and hot, with a high near 93. Southwest wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 76. Southwest wind around 15 mph.
Monday
A 20 percent chance of showers after 1pm. Sunny and hot, with a high near 93. Southwest wind around 15 mph.
Monday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. West wind 5 to 10 mph.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Thursday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 80. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Merton WI
 43.12°N 88.27°W (Elev. 1050 ft)
Last Update:
3:08 am CDT Jun 20, 2025
Forecast Valid:
5am CDT Jun 20, 2025-6pm CDT Jun 26, 2025
 
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