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

39°F

4°C

Humidity 70%
Wind Speed S 5 mph
Barometer 30.18 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 4 Nov 6:35 am CST
Extended Forecast for

Castalia IA

  • Today

    Today: Sunny, with a high near 59. Light south wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 22 mph.

    High: 59 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 42. Southeast wind 6 to 15 mph becoming northwest after midnight. Winds could gust as high as 23 mph.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 53. Breezy, with a northwest wind 15 to 20 mph decreasing to 6 to 11 mph in the afternoon. Winds could gust as high as 36 mph.

    High: 53 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 31. Light and variable wind.

    Low: 31 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 52. Breezy, with a south wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 52 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Thursday Night

    Thursday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 41. South wind 9 to 14 mph becoming west after midnight. Winds could gust as high as 22 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Chance Rain

  • Friday

    Friday: Mostly sunny, with a high near 53. Northwest wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 53 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 31. Northwest wind 5 to 10 mph becoming light north after midnight.

    Low: 31 °F

    Mostly Cloudy

  • Saturday

    Saturday: Rain likely, mainly after noon. Mostly cloudy, with a high near 43. Light and variable wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 60%.

    High: 43 °F

    Slight Chance
    Rain then
    Rain Likely

Detailed Forecast

Today
Sunny, with a high near 59. Light south wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 22 mph.
Tonight
Partly cloudy, with a low around 42. Southeast wind 6 to 15 mph becoming northwest after midnight. Winds could gust as high as 23 mph.
Wednesday
Sunny, with a high near 53. Breezy, with a northwest wind 15 to 20 mph decreasing to 6 to 11 mph in the afternoon. Winds could gust as high as 36 mph.
Wednesday Night
Partly cloudy, with a low around 31. Light and variable wind.
Thursday
Mostly cloudy, with a high near 52. Breezy, with a south wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 41. South wind 9 to 14 mph becoming west after midnight. Winds could gust as high as 22 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly sunny, with a high near 53. Northwest wind 9 to 15 mph, with gusts as high as 23 mph.
Friday Night
Mostly cloudy, with a low around 31. Northwest wind 5 to 10 mph becoming light north after midnight.
Saturday
Rain likely, mainly after noon. Mostly cloudy, with a high near 43. Light and variable wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 60%.
Saturday Night
A chance of rain and snow before midnight. Mostly cloudy, with a low around 24. Northwest wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 34. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Sunday Night
Partly cloudy, with a low around 18. Northwest wind around 8 mph.
Monday
Mostly sunny, with a high near 35. Northwest wind 7 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Castalia IA
 43.1°N 91.68°W
Last Update:
5:26 am CST Nov 4, 2025
Forecast Valid:
6am CST Nov 4, 2025-6pm CST Nov 10, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation