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

12°F

-11°C

Humidity 73%
Wind Speed NW 6 mph
Barometer 30.54 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill2°F (-17°C)
Last update 23 Feb 10:55 am CST
Extended Forecast for

6 Miles NNE Castalia IA

  • Today

    Today: Mostly sunny, with a high near 19. Northwest wind 5 to 7 mph becoming calm in the afternoon.

    High: 19 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 8. Wind chill values as low as -2. Light south wind increasing to 9 to 14 mph in the evening. Winds could gust as high as 22 mph.

    Low: 8 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of snow between 9am and 3pm. Partly sunny, with a high near 33. South wind around 15 mph becoming west in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 20%.

    High: 33 °F

    Slight Chance
    Snow

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 11. Wind chill values as low as -1. Northwest wind 11 to 15 mph, with gusts as high as 24 mph.

    Low: 11 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 23. Northwest wind 5 to 10 mph becoming south in the afternoon.

    High: 23 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 13. Light and variable wind becoming southeast around 5 mph after midnight. New snow accumulation of 1 to 3 inches possible.

    Low: 13 °F

    Chance Snow

  • Thursday

    Thursday: Partly sunny, with a high near 31. East wind 5 to 7 mph becoming west in the afternoon.

    High: 31 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 22. Southwest wind 6 to 8 mph.

    Low: 22 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 43. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 43 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 19. Northwest wind 5 to 7 mph becoming calm in the afternoon.
Tonight
Mostly cloudy, with a low around 8. Wind chill values as low as -2. Light south wind increasing to 9 to 14 mph in the evening. Winds could gust as high as 22 mph.
Tuesday
A slight chance of snow between 9am and 3pm. Partly sunny, with a high near 33. South wind around 15 mph becoming west in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 11. Wind chill values as low as -1. Northwest wind 11 to 15 mph, with gusts as high as 24 mph.
Wednesday
Sunny, with a high near 23. Northwest wind 5 to 10 mph becoming south in the afternoon.
Wednesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 13. Light and variable wind becoming southeast around 5 mph after midnight. New snow accumulation of 1 to 3 inches possible.
Thursday
Partly sunny, with a high near 31. East wind 5 to 7 mph becoming west in the afternoon.
Thursday Night
Mostly clear, with a low around 22. Southwest wind 6 to 8 mph.
Friday
Sunny, with a high near 43. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 20. West wind around 10 mph becoming north after midnight.
Saturday
A 20 percent chance of snow. Partly sunny, with a high near 32. North wind around 11 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 12. North wind around 9 mph.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 25. Northeast wind around 9 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNE Castalia IA
 43.19°N 91.62°W
Last Update:
11:02 am CST Feb 23, 2026
Forecast Valid:
11am CST Feb 23, 2026-6pm CST Mar 1, 2026
 
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Additional Resources

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