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.

A Few Clouds

27°F

-3°C

Humidity 93%
Wind Speed Vrbl 5 G 12 mph
Barometer 30.30 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 11 Jan 3:35 pm CST
Extended Forecast for

6 Miles SW Castalia IA

  • Tonight

    Tonight: Partly cloudy, with a low around 24. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 40. West wind 6 to 8 mph.

    High: 40 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30. Southwest wind 6 to 9 mph.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain after noon. Partly sunny, with a high near 43. Breezy, with a west wind 14 to 17 mph, with gusts as high as 28 mph.

    High: 43 °F

    Breezy.
    Partly Sunny
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 23. Blustery, with a northwest wind 15 to 23 mph, with gusts as high as 36 mph.

    Low: 23 °F

    Mostly Cloudy
    and Blustery

  • Wednesday

    Wednesday: Partly sunny, with a high near 27. Blustery, with a north wind 20 to 25 mph, with gusts as high as 37 mph.

    High: 27 °F

    Partly Sunny
    and Blustery

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 11. North wind 9 to 14 mph becoming light after midnight. Winds could gust as high as 22 mph.

    Low: 11 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of snow after noon. Partly sunny, with a high near 27. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 27 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 22. Southwest wind around 9 mph.

    Low: 22 °F

    Chance Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 24. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 40. West wind 6 to 8 mph.
Monday Night
Mostly cloudy, with a low around 30. Southwest wind 6 to 9 mph.
Tuesday
A 20 percent chance of rain after noon. Partly sunny, with a high near 43. Breezy, with a west wind 14 to 17 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly cloudy, with a low around 23. Blustery, with a northwest wind 15 to 23 mph, with gusts as high as 36 mph.
Wednesday
Partly sunny, with a high near 27. Blustery, with a north wind 20 to 25 mph, with gusts as high as 37 mph.
Wednesday Night
Mostly clear, with a low around 11. North wind 9 to 14 mph becoming light after midnight. Winds could gust as high as 22 mph.
Thursday
A 20 percent chance of snow after noon. Partly sunny, with a high near 27. Light and variable wind becoming south 5 to 10 mph in the morning.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 22. Southwest wind around 9 mph.
Friday
Snow likely, mainly after noon. Mostly cloudy, with a high near 31. West wind 9 to 14 mph. Chance of precipitation is 60%.
Friday Night
Mostly cloudy, with a low around 9. Northwest wind 10 to 13 mph.
Saturday
Mostly cloudy, with a high near 17. Northwest wind 10 to 14 mph.
Saturday Night
Partly cloudy, with a low around 5. West wind around 10 mph.
Sunday
Partly sunny, with a high near 20. West wind 10 to 13 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SW Castalia IA
 43.06°N 91.77°W
Last Update:
3:26 pm CST Jan 11, 2026
Forecast Valid:
3pm CST Jan 11, 2026-6pm CST Jan 18, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation