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

Decorah (KDEH)

Lat: 43.28°NLon: 91.73°WElev: 1158ft.

Mostly Cloudy

79°F

26°C

Humidity 79%
Wind Speed Calm
Barometer 29.88 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 2 Sep 7:15 pm CDT
Extended Forecast for

Spring Grove MN

  • Tonight

    Tonight: Mostly clear, with a low around 68. Calm wind becoming south around 5 mph after midnight.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 84. South wind 5 to 8 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Chance
    T-storms then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 68. Light and variable wind becoming southeast around 6 mph in the evening. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 68 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly sunny, with a high near 87. South wind 3 to 5 mph.

    High: 87 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Light southeast wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 85. Light southeast wind.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 66. Southeast wind 3 to 5 mph.

    Low: 66 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. Southeast wind around 5 mph.

    High: 83 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65. Southeast wind 3 to 5 mph.

    Low: 65 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 68. Calm wind becoming south around 5 mph after midnight.
Thursday
A chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 84. South wind 5 to 8 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 68. Light and variable wind becoming southeast around 6 mph in the evening. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly sunny, with a high near 87. South wind 3 to 5 mph.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Light southeast wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 85. Light southeast wind.
Saturday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 66. Southeast wind 3 to 5 mph.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. Southeast wind around 5 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65. Southeast wind 3 to 5 mph.
Labor Day
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 80. Southeast wind 5 to 7 mph.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Southeast wind 6 to 8 mph.
Tuesday
A 40 percent chance of showers. Partly sunny, with a high near 80. South wind 8 to 11 mph, with gusts as high as 22 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind around 10 mph becoming west after midnight. Winds could gust as high as 21 mph.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79. West wind 8 to 10 mph, with gusts as high as 20 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Spring Grove MN
 43.56°N 91.63°W
Last Update:
6:36 pm CDT Sep 2, 2026
Forecast Valid:
7pm CDT Sep 2, 2026-6pm CDT Sep 9, 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