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

Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Madison, Madison-Lac Qui Parle County Airport (KDXX)

Lat: 44.98°NLon: 96.18°WElev: 1077ft.

Fair

63°F

17°C

Humidity 100%
Wind Speed S 6 mph
Barometer 29.97 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 19 Aug 10:35 pm CDT
Extended Forecast for

Nassau MN

  • Tonight

    Tonight: Mostly clear, with a low around 60. South wind 5 to 10 mph.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 84. Southwest wind 5 to 10 mph becoming west northwest in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. Northwest wind 5 to 10 mph.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82. North wind around 5 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. Northwest wind around 5 mph.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79. North wind 5 to 10 mph.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54. North wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 79. Calm wind becoming southeast around 5 mph in the morning.

    High: 79 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 59. South southeast wind 5 to 10 mph.

    Low: 59 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 60. South wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 84. Southwest wind 5 to 10 mph becoming west northwest in the afternoon.
Thursday Night
Mostly clear, with a low around 58. Northwest wind 5 to 10 mph.
Friday
Sunny, with a high near 82. North wind around 5 mph.
Friday Night
Mostly clear, with a low around 58. Northwest wind around 5 mph.
Saturday
Sunny, with a high near 79. North wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 54. North wind around 5 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 79. Calm wind becoming southeast around 5 mph in the morning.
Sunday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 59. South southeast wind 5 to 10 mph.
Monday
A 20 percent chance of showers. Mostly sunny, with a high near 83. South southeast wind 5 to 10 mph.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62. Southwest wind around 5 mph.
Tuesday
Mostly sunny, with a high near 83. West southwest wind 5 to 10 mph becoming northwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 60. Northwest wind around 5 mph.
Wednesday
Mostly sunny, with a high near 82. North northwest wind 5 to 10 mph becoming east northeast in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nassau MN
 45.06°N 96.45°W (Elev. 1132 ft)
Last Update:
9:42 pm CDT Aug 19, 2026
Forecast Valid:
10pm CDT Aug 19, 2026-6pm CDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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