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

57°F

14°C

Humidity 100%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 20 Jun 12:15 am CDT
Extended Forecast for

Ossian IA

  • Overnight

    Overnight: Mostly clear, with a low around 52. West wind 7 to 13 mph.

    Low: 52 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 75. Northwest wind 7 to 10 mph.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 54. Northwest wind around 6 mph becoming light and variable.

    Low: 54 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 69. East wind 5 to 10 mph.

    High: 69 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 53. Northeast wind 6 to 8 mph.

    Low: 53 °F

    Slight Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 74. Northeast wind around 7 mph.

    High: 74 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54. Light north wind.

    Low: 54 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 75. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 75 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 56. Southwest wind 5 to 7 mph. Chance of precipitation is 60%.

    Low: 56 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 52. West wind 7 to 13 mph.
Saturday
Sunny, with a high near 75. Northwest wind 7 to 10 mph.
Saturday Night
Increasing clouds, with a low around 54. Northwest wind around 6 mph becoming light and variable.
Sunday
A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 69. East wind 5 to 10 mph.
Sunday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 53. Northeast wind 6 to 8 mph.
Monday
Mostly sunny, with a high near 74. Northeast wind around 7 mph.
Monday Night
Partly cloudy, with a low around 54. Light north wind.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 75. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 56. Southwest wind 5 to 7 mph. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 74. West wind 7 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 54. Northwest wind 3 to 7 mph.
Thursday
Mostly sunny, with a high near 75. North wind 3 to 6 mph.
Thursday Night
Partly cloudy, with a low around 54. Light and variable wind.
Friday
Mostly sunny, with a high near 76. Light and variable wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ossian IA
 43.15°N 91.74°W
Last Update:
12:06 am CDT Jun 20, 2026
Forecast Valid:
12am CDT Jun 20, 2026-6pm CDT Jun 26, 2026
 
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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