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Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. 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

74°F

23°C

Humidity 91%
Wind Speed NE 8 mph
Barometer 29.97 in (1014.6 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 17 Aug 12:56 pm CDT
Extended Forecast for

Walnut Grove MN

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 86. South southeast wind 10 to 15 mph.

    High: 86 °F

    Chance
    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 70. South wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 70 °F

    T-storms
    Likely

  • Monday

    Monday: A 10 percent chance of showers and thunderstorms before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 82. South southwest wind 5 to 10 mph becoming north northwest in the afternoon.

    High: 82 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63. North wind around 5 mph.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 80. North wind around 5 mph.

    High: 80 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61. North northeast wind around 5 mph becoming calm after midnight.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. East wind around 5 mph becoming south after midnight.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 83. South wind 5 to 10 mph.

    High: 83 °F

    Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 86. South southeast wind 10 to 15 mph.
Tonight
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 70. South wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday
A 10 percent chance of showers and thunderstorms before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 82. South southwest wind 5 to 10 mph becoming north northwest in the afternoon.
Monday Night
Partly cloudy, with a low around 63. North wind around 5 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 80. North wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 61. North northeast wind around 5 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 80. Calm wind becoming east northeast around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 60. East wind around 5 mph becoming south after midnight.
Thursday
Sunny, with a high near 83. South wind 5 to 10 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. South wind around 10 mph.
Friday
Mostly sunny, with a high near 80. West wind 5 to 10 mph becoming north northwest in the afternoon.
Friday Night
Mostly clear, with a low around 57. Northwest wind 5 to 10 mph.
Saturday
Sunny, with a high near 75. North northwest wind 5 to 10 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Walnut Grove MN
 44.21°N 95.48°W (Elev. 1250 ft)
Last Update:
12:48 pm CDT Aug 17, 2025
Forecast Valid:
1pm CDT Aug 17, 2025-6pm CDT Aug 23, 2025
 
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