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

Dangerous Heat Builds and Expands; Critical Fire Weather for the Southwest; Severe Thunderstorms for Plains and Midwest

Dangerous to record breaking heat will build across the center of the nation and slowly build eastward this week. Wildfire conditions remain critical for the Southwest and portions of the Great Basin through Monday. For the northern Plains and upper Midwest, severe thunderstorms with the potential for large to very large hail and severe winds are the primary hazards. Read More >

Hazardous Weather Conditions

Current conditions at

Baraboo Wisconsin Dells Airport (KDLL)

Lat: 43.52°NLon: 89.77°WElev: 971ft.

Mostly Cloudy

74°F

23°C

Humidity 89%
Wind Speed S 9 mph
Barometer 29.85 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 29 Jun 3:15 am CDT
Extended Forecast for

Lake Wisconsin WI

Extreme Heat Warning June 29, 12:00pm until June 30, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Overnight

    Overnight: Mostly cloudy, with a low around 73. South wind around 10 mph.

    Low: 73 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, then gradually becoming sunny and hot, with a high near 94. Heat index values as high as 106. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 94 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. South wind 10 to 15 mph.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 94. Heat index values as high as 105. Southwest wind 10 to 15 mph.

    High: 94 °F

    Hot

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 76. Southwest wind 10 to 15 mph. Chance of precipitation is 20%.

    Low: 76 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Sunny and hot, with a high near 93. Southwest wind 5 to 10 mph.

    High: 93 °F

    Hot

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 75. Southwest wind around 10 mph.

    Low: 75 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 92. Southwest wind around 10 mph.

    High: 92 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Chance of precipitation is 50%.

    Low: 73 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 73. South wind around 10 mph.
Monday
Partly sunny, then gradually becoming sunny and hot, with a high near 94. Heat index values as high as 106. South wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 76. South wind 10 to 15 mph.
Tuesday
Mostly sunny and hot, with a high near 94. Heat index values as high as 105. Southwest wind 10 to 15 mph.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 76. Southwest wind 10 to 15 mph. Chance of precipitation is 20%.
Wednesday
Sunny and hot, with a high near 93. Southwest wind 5 to 10 mph.
Wednesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 75. Southwest wind around 10 mph.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 92. Southwest wind around 10 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Chance of precipitation is 50%.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
Friday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Independence Day
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Saturday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Wisconsin WI
 43.38°N 89.59°W (Elev. 778 ft)
Last Update:
2:37 am CDT Jun 29, 2026
Forecast Valid:
3am CDT Jun 29, 2026-6pm CDT Jul 5, 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