Heat Wave Persists Over the Central U.S.; Significant Flooding Expected in the Northern Mid-Atlantic Tuesday

Dangerous and extreme heat will remain across portions of the Central U.S. this week, persisting across the Mid to Lower Mississippi Valleys, Gulf Coast, Southern Plains and portions of Texas. A heat wave over the Southwest will intensify late this week. Severe thunderstorms and flash flooding will spread from the Great Lakes/Ohio Valley to the Mid-Atlantic and Northeast the next few days. Read More >

Hazardous Weather Conditions

Current conditions at

Baraboo Wisconsin Dells Airport (KDLL)

Lat: 43.52°NLon: 89.77°WElev: 971ft.

Mostly Cloudy

67°F

19°C

Humidity 91%
Wind Speed NE 8 mph
Barometer 29.84 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 28 Jul 5:35 am CDT
Extended Forecast for

4 Miles NNW Merrimac WI

  • Today

    Today: Mostly sunny, with a high near 83. Northeast wind 5 to 10 mph.

    High: 83 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 62. East wind around 5 mph becoming calm  in the evening.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83. Calm wind becoming south around 5 mph.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64. Southwest wind around 5 mph becoming calm.

    Low: 64 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 86. Calm wind becoming southwest around 5 mph in the morning.

    High: 86 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 1am.  Mostly cloudy, with a low around 66. Southwest wind around 5 mph becoming calm.

    Low: 66 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm.  Mostly cloudy, with a high near 80. Calm wind becoming south around 5 mph in the morning.  Chance of precipitation is 50%.

    High: 80 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers.  Mostly cloudy, with a low around 64. Southeast wind around 5 mph becoming calm.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 64 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm.  Partly sunny, with a high near 79. Chance of precipitation is 40%.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 83. Northeast wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 62. East wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 83. Calm wind becoming south around 5 mph.
Wednesday Night
Partly cloudy, with a low around 64. Southwest wind around 5 mph becoming calm.
Thursday
Mostly sunny, with a high near 86. Calm wind becoming southwest around 5 mph in the morning.
Thursday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 66. Southwest wind around 5 mph becoming calm.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 50%.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 64. Southeast wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 79. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 62.
Sunday
Sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 61.
Monday
Sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Merrimac WI
 43.42°N 89.65°W (Elev. 1299 ft)
5:21 am CDT Jul 28, 2026
5am CDT Jul 28, 2026-6pm CDT Aug 3, 2026
 
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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