Severe Thunderstorms and Heavy Rainfall for the Southwest; Heat Spreads Across the Center of the Nation

Moisture will continue to move into areas of the West. This will increase showers and thunderstorms coverage and intensity, with the risk of flash flooding and damaging wind gusts. Meanwhile, heat across the Southwest will expand into the center of the nation this weekend into early next week. Trends favor this heat will spread across the Ohio Valley, mid-Atlantic next week. Read More >

Current conditions at

Marshall, Southwest Minnesota Regional Airport - Marshall/Ryan Field (KMML)

Lat: 44.45°NLon: 95.82°WElev: 1181ft.

Fair

81°F

27°C

Humidity 65%
Wind Speed E 10 mph
Barometer 29.77 in (1007.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 29 Aug 6:56 pm CDT
Extended Forecast for

4 Miles N Walnut Grove MN

  • Tonight

    Tonight: Increasing clouds, with a low around 66. East wind around 5 mph.

    Low: 66 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 89. Heat index values as high as 97. North wind 5 to 10 mph becoming south southeast in the afternoon.

    High: 89 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70. Southeast wind 5 to 10 mph becoming west southwest after midnight.

    Low: 70 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 86. Northwest wind 5 to 10 mph.

    High: 86 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers, with thunderstorms also possible after 1pm.  Partly sunny, with a high near 83. Calm wind becoming east northeast around 5 mph in the afternoon.  Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 64. Northeast wind around 5 mph becoming northwest after midnight.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 20 percent chance of showers before 1pm.  Mostly sunny, with a high near 83. North northwest wind around 5 mph becoming northeast in the afternoon.

    High: 83 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 64. East wind around 5 mph becoming south after midnight.

    Low: 64 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
Increasing clouds, with a low around 66. East wind around 5 mph.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 89. Heat index values as high as 97. North wind 5 to 10 mph becoming south southeast in the afternoon.
Sunday Night
Partly cloudy, with a low around 70. Southeast wind 5 to 10 mph becoming west southwest after midnight.
Monday
Partly sunny, with a high near 86. Northwest wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 64. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 83. Calm wind becoming east northeast around 5 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Northeast wind around 5 mph becoming northwest after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 83. North northwest wind around 5 mph becoming northeast in the afternoon.
Wednesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64. East wind around 5 mph becoming south after midnight.
Thursday
Partly sunny, with a high near 85. South southeast wind 5 to 10 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64. Southeast wind around 5 mph.
Friday
Mostly sunny, with a high near 85. South southeast wind 5 to 10 mph.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67. South southeast wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 84. South southeast wind around 10 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Walnut Grove MN
 44.28°N 95.48°W (Elev. 1171 ft)
6:01 pm CDT Aug 29, 2026
7pm CDT Aug 29, 2026-6pm CDT Sep 5, 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