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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Hazardous Weather Conditions

Current conditions at

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

Lat: 44.45°NLon: 95.82°WElev: 1181ft.

Overcast

68°F

20°C

Humidity 73%
Wind Speed NE 9 mph
Barometer 30.28 in (1025.4 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 17 Sep 3:56 pm CDT
Extended Forecast for

Walnut Grove MN

  • Tonight

    Tonight: A chance of showers between 3am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 58. East wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 58 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and thunderstorms before 3pm, then showers and possibly a thunderstorm, mainly after 3pm. Some of the storms could produce heavy rainfall. High near 64. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 64 °F

    Heavy Rain

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 10pm, then a chance of showers between 10pm and 5am. Cloudy, with a low around 57. Northeast wind 10 to 15 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Showers
    Likely

  • Saturday

    Saturday: A 30 percent chance of showers, mainly after 7am. Mostly cloudy, with a high near 65. North northeast wind around 10 mph.

    High: 65 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 54. North northeast wind around 10 mph.

    Low: 54 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 65. East northeast wind 10 to 15 mph.

    High: 65 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 52. East northeast wind around 10 mph. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 52 °F

    Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 60. East northeast wind around 10 mph.

    High: 60 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 48. East wind 5 to 10 mph.

    Low: 48 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of showers between 3am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 58. East wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Showers and thunderstorms before 3pm, then showers and possibly a thunderstorm, mainly after 3pm. Some of the storms could produce heavy rainfall. High near 64. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Friday Night
Showers likely and possibly a thunderstorm before 10pm, then a chance of showers between 10pm and 5am. Cloudy, with a low around 57. Northeast wind 10 to 15 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A 30 percent chance of showers, mainly after 7am. Mostly cloudy, with a high near 65. North northeast wind around 10 mph.
Saturday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 54. North northeast wind around 10 mph.
Sunday
A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 65. East northeast wind 10 to 15 mph.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 52. East northeast wind around 10 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 60. East northeast wind around 10 mph.
Monday Night
Mostly cloudy, with a low around 48. East wind 5 to 10 mph.
Tuesday
Partly sunny, with a high near 63. Southeast wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 48. South southeast wind around 5 mph.
Wednesday
Partly sunny, with a high near 67. South southeast wind 5 to 10 mph.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 54. South southeast wind around 5 mph.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 70. South wind 5 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Walnut Grove MN
 44.23°N 95.48°W (Elev. 1201 ft)
Last Update:
3:52 pm CDT Sep 17, 2026
Forecast Valid:
4pm CDT Sep 17, 2026-6pm CDT Sep 24, 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