Severe Thunderstorms in the Northern Plains and Upper Midwest; Critical Fire Weather in the West; Dangerous Heat in the Central and Eastern U.S.

Severe thunderstorms are likely today across the northern Plains and into the upper Mississippi Valley. Gusty winds and dry conditions will result in widespread critical fire weather through Saturday across parts of the Four Corners region and the Great Basin. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Read More >

Current conditions at

Appleton-Outagamie (KATW)

Lat: 44.26°NLon: 88.52°WElev: 869ft.

Mostly Cloudy

77°F

25°C

Humidity 83%
Wind Speed SW 17 G 23 mph
Barometer 29.70 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 21 Jun 5:45 am CDT
Extended Forecast for

Combined Locks WI

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

    Today: Partly sunny and hot, with a high near 91. South southwest wind 14 to 21 mph, with gusts as high as 41 mph.

    High: 91 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 79. Southwest wind 13 to 17 mph, with gusts as high as 31 mph.

    Low: 79 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 93. Heat index values as high as 102. South southwest wind 15 to 18 mph, with gusts as high as 31 mph.

    High: 93 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 79. South southwest wind around 15 mph, with gusts as high as 28 mph.

    Low: 79 °F

    Clear

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms after 1pm.  Sunny and hot, with a high near 90. Southwest wind around 16 mph, with gusts as high as 29 mph.

    High: 90 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 70. Chance of precipitation is 60%.

    Low: 70 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 74.

    High: 74 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 60. Chance of precipitation is 60%.

    Low: 60 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a high near 73. Chance of precipitation is 70%.

    High: 73 °F

    Showers
    Likely

Detailed Forecast

Today
Partly sunny and hot, with a high near 91. South southwest wind 14 to 21 mph, with gusts as high as 41 mph.
Tonight
Mostly clear, with a low around 79. Southwest wind 13 to 17 mph, with gusts as high as 31 mph.
Sunday
Sunny and hot, with a high near 93. Heat index values as high as 102. South southwest wind 15 to 18 mph, with gusts as high as 31 mph.
Sunday Night
Clear, with a low around 79. South southwest wind around 15 mph, with gusts as high as 28 mph.
Monday
A 50 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 90. Southwest wind around 16 mph, with gusts as high as 29 mph.
Monday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Tuesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 74.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 73. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 61. Chance of precipitation is 70%.
Thursday
Showers and possibly a thunderstorm. High near 78. Chance of precipitation is 80%.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Friday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Combined Locks WI
 44.26°N 88.28°W (Elev. 699 ft)
6:36 am CDT Jun 21, 2025
6am CDT Jun 21, 2025-6pm CDT Jun 27, 2025
 
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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