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.

Overcast

66°F

19°C

Humidity 88%
Wind Speed Vrbl 5 mph
Barometer 30.23 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 17 Sep 3:15 pm CDT
Extended Forecast for

Spring Grove MN

  • Tonight

    Tonight: Mostly cloudy, with a low around 57. Northeast wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely, then showers and possibly a thunderstorm after 1pm. High near 64. East wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 64 °F

    Showers
    Likely then
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 59. East wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 59 °F

    Heavy Rain

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 68. East wind around 7 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 68 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 57. Northeast wind around 8 mph. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 57 °F

    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 63. Northeast wind 9 to 11 mph, with gusts as high as 21 mph. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 63 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 51. East wind around 8 mph.

    Low: 51 °F

    Chance
    Showers

  • Monday

    Monday: A 40 percent chance of showers. Mostly cloudy, with a high near 60. East wind around 8 mph, with gusts as high as 18 mph.

    High: 60 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 48. East wind 6 to 8 mph.

    Low: 48 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 57. Northeast wind around 5 mph becoming calm in the evening.
Friday
Showers likely, then showers and possibly a thunderstorm after 1pm. High near 64. East wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Friday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 59. East wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 68. East wind around 7 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 57. Northeast wind around 8 mph. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
A 40 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 63. Northeast wind 9 to 11 mph, with gusts as high as 21 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 51. East wind around 8 mph.
Monday
A 40 percent chance of showers. Mostly cloudy, with a high near 60. East wind around 8 mph, with gusts as high as 18 mph.
Monday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 48. East wind 6 to 8 mph.
Tuesday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 62. East wind 5 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 49. Light east wind.
Wednesday
Mostly sunny, with a high near 69. Light and variable wind.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Calm wind.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 71. Light southeast wind.
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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:
1:21 pm CDT Sep 17, 2026
Forecast Valid:
3pm 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