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

68°F

20°C

Humidity 35%
Wind Speed Calm
Barometer 29.92 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 7 Oct 6:35 pm CDT
Extended Forecast for

6 Miles SW Castalia IA

  • Tonight

    Tonight: Increasing clouds, with a low around 49. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 49 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 67. Calm wind.

    High: 67 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Cloudy, then gradually becoming partly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Decreasing
    Clouds

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 73. Light southeast wind becoming south 5 to 10 mph in the morning.

    High: 73 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Clear, with a low around 61. South wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 61 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 80. Breezy, with a south wind 11 to 20 mph.

    High: 80 °F

    Sunny then
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59. South wind 8 to 14 mph, with gusts as high as 24 mph.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 76. South wind 6 to 9 mph.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58. South wind 3 to 5 mph.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 49. Northwest wind 5 to 7 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 67. Calm wind.
Thursday Night
Cloudy, then gradually becoming partly cloudy, with a low around 50. Calm wind.
Friday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 73. Light southeast wind becoming south 5 to 10 mph in the morning.
Friday Night
Clear, with a low around 61. South wind 8 to 10 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 80. Breezy, with a south wind 11 to 20 mph.
Saturday Night
Mostly clear, with a low around 59. South wind 8 to 14 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 76. South wind 6 to 9 mph.
Sunday Night
Partly cloudy, with a low around 58. South wind 3 to 5 mph.
Columbus Day
A 30 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 69. West wind 5 to 9 mph.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 45. North wind 7 to 10 mph, with gusts as high as 18 mph.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 58. North wind around 9 mph.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 41. Light northwest wind.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 59. Calm wind becoming southwest 5 to 8 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SW Castalia IA
 43.06°N 91.77°W
Last Update:
5:06 pm CDT Oct 7, 2026
Forecast Valid:
6pm CDT Oct 7, 2026-6pm CDT Oct 14, 2026
 
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