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

Madison, Dane County Regional-Truax Field (KMSN)

Lat: 43.14°NLon: 89.35°WElev: 860ft.

Overcast

73°F

23°C

Humidity 84%
Wind Speed E 10 mph
Barometer 29.89 in (1011.5 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 28 Jun 9:53 pm CDT
Extended Forecast for

Cottage Grove WI

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

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 1am and 4am. Mostly cloudy, with a low around 73. South wind around 10 mph. Chance of precipitation is 20%.

    Low: 73 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: Mostly sunny and hot, with a high near 93. Heat index values as high as 105. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 93 °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 93. Heat index values as high as 105. Southwest wind 10 to 15 mph.

    High: 93 °F

    Hot

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 74. Southwest wind 10 to 15 mph. Chance of precipitation is 20%.

    Low: 74 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Sunny and hot, with a high near 94. Southwest wind 10 to 15 mph.

    High: 94 °F

    Hot

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 75. Southwest wind around 10 mph.

    Low: 75 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 92. Southwest wind 10 to 15 mph.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms between 1am and 4am. Mostly cloudy, with a low around 73. South wind around 10 mph. Chance of precipitation is 20%.
Monday
Mostly sunny and hot, with a high near 93. Heat index values as high as 105. 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 93. Heat index values as high as 105. Southwest wind 10 to 15 mph.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 74. Southwest wind 10 to 15 mph. Chance of precipitation is 20%.
Wednesday
Sunny and hot, with a high near 94. Southwest wind 10 to 15 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 75. Southwest wind around 10 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 92. Southwest wind 10 to 15 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 92.
Friday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Independence Day
A 30 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cottage Grove WI
 43.09°N 89.19°W (Elev. 919 ft)
Last Update:
9:57 pm CDT Jun 28, 2026
Forecast Valid:
10pm CDT Jun 28, 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