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

64°F

18°C

Humidity 84%
Wind Speed NE 9 mph
Barometer 30.32 in (1027.0 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 17 Sep 11:56 am CDT
Extended Forecast for

Walnut Grove MN

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 75. East northeast wind 5 to 10 mph.

    High: 75 °F

    Mostly Cloudy

  • 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 1pm, then showers and possibly a thunderstorm, mainly after 1pm. Some of the storms could produce heavy rainfall. High near 70. 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: 70 °F

    Heavy Rain

  • Friday Night

    Friday Night: Showers likely, mainly before 10pm. 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 possible.

    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.

    Low: 52 °F

    Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 59. East northeast wind around 10 mph.

    High: 59 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 75. East northeast wind 5 to 10 mph.
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 1pm, then showers and possibly a thunderstorm, mainly after 1pm. Some of the storms could produce heavy rainfall. High near 70. 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, mainly before 10pm. 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 possible.
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.
Monday
A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 59. 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 65. Southeast wind 5 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 48. South southeast wind around 5 mph.
Wednesday
Partly sunny, with a high near 68. South southeast wind 5 to 10 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Walnut Grove MN
 44.23°N 95.48°W (Elev. 1201 ft)
Last Update:
12:06 pm CDT Sep 17, 2026
Forecast Valid:
12pm CDT Sep 17, 2026-6pm CDT Sep 23, 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