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.

Fair

77°F

25°C

Humidity 57%
Wind Speed SW 3 mph
Barometer 29.98 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 13 Jul 6:35 pm CDT
Extended Forecast for

Ossian IA

  • Tonight

    Tonight: Mostly clear, with a low around 61. Southwest wind 3 to 5 mph.

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 85. Southwest wind around 7 mph.

    High: 85 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65. South wind around 6 mph.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84. South wind 6 to 9 mph.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers, with thunderstorms also possible after 4am. Partly cloudy, with a low around 68. South wind around 6 mph. Chance of precipitation is 20%.

    Low: 68 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 83. South wind 6 to 9 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. West wind around 7 mph becoming northeast after midnight. Chance of precipitation is 60%.

    Low: 63 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 76. North wind around 9 mph. Chance of precipitation is 40%.

    High: 76 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 59. North wind around 7 mph.

    Low: 59 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 61. Southwest wind 3 to 5 mph.
Monday
Sunny, with a high near 85. Southwest wind around 7 mph.
Monday Night
Mostly clear, with a low around 65. South wind around 6 mph.
Tuesday
Sunny, with a high near 84. South wind 6 to 9 mph.
Tuesday Night
A slight chance of showers, with thunderstorms also possible after 4am. Partly cloudy, with a low around 68. South wind around 6 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 83. South wind 6 to 9 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. West wind around 7 mph becoming northeast after midnight. Chance of precipitation is 60%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 76. North wind around 9 mph. Chance of precipitation is 40%.
Thursday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 59. North wind around 7 mph.
Friday
Partly sunny, with a high near 76. Northeast wind around 6 mph becoming southeast in the afternoon.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 61. Southeast wind around 6 mph.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 78. South wind 6 to 8 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. South wind around 6 mph.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80. East wind around 7 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Ossian IA
 43.15°N 91.77°W
Last Update:
4:44 pm CDT Jul 13, 2025
Forecast Valid:
6pm CDT Jul 13, 2025-6pm CDT Jul 20, 2025
 
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Additional Resources

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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