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.

Overcast

54°F

12°C

Humidity 88%
Wind Speed Vrbl 7 mph
Barometer 30.12 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 14 Oct 9:15 am CDT
Extended Forecast for

Castalia IA

  • Today

    Today: Partly sunny, with a high near 61. North wind 6 to 8 mph.

    High: 61 °F

    Partly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 50. East wind 3 to 6 mph.

    Low: 50 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Showers, mainly after 9am. High near 55. East wind around 6 mph becoming calm. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 55 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 43. Breezy, with a northwest wind 7 to 12 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Showers
    Likely and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 53. Breezy, with a northwest wind 17 to 24 mph, with gusts as high as 36 mph.

    High: 53 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 32. North wind around 6 mph becoming calm in the evening.

    Low: 32 °F

    Mostly Clear
    then Frost

  • Saturday

    Saturday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 58. Light southwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 58 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 42. South wind 10 to 13 mph, with gusts as high as 22 mph.

    Low: 42 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 63. Breezy, with a south wind 13 to 17 mph.

    High: 63 °F

    Sunny and
    Breezy

Detailed Forecast

Today
Partly sunny, with a high near 61. North wind 6 to 8 mph.
Tonight
A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 50. East wind 3 to 6 mph.
Thursday
Showers, mainly after 9am. High near 55. East wind around 6 mph becoming calm. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Showers likely before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 43. Breezy, with a northwest wind 7 to 12 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Partly sunny, with a high near 53. Breezy, with a northwest wind 17 to 24 mph, with gusts as high as 36 mph.
Friday Night
Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 32. North wind around 6 mph becoming calm in the evening.
Saturday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 58. Light southwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Saturday Night
Clear, with a low around 42. South wind 10 to 13 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 63. Breezy, with a south wind 13 to 17 mph.
Sunday Night
Partly cloudy, with a low around 47. Southwest wind 5 to 10 mph, with gusts as high as 21 mph.
Monday
Mostly sunny, with a high near 65. Light southwest wind.
Monday Night
Mostly clear, with a low around 46. Calm wind.
Tuesday
Mostly sunny, with a high near 68. Calm wind becoming south around 6 mph in the afternoon.
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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:
6:10 am CDT Oct 14, 2026
Forecast Valid:
9am CDT Oct 14, 2026-6pm CDT Oct 20, 2026
 
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Additional Resources

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Chance of Precipitation