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

52°F

11°C

Humidity 100%
Wind Speed NE 5 mph
Barometer 30.14 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 14 Oct 9:35 pm CDT
Extended Forecast for

3 Miles SE Castalia IA

  • Tonight

    Tonight: A 10 percent chance of showers after 5am. Cloudy, with a low around 49. East wind 5 to 7 mph.

    Low: 49 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Showers, mainly after 10am. High near 58. East wind 5 to 7 mph becoming light and variable. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 58 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely, mainly before 11pm. Mostly cloudy, with a low around 43. Northwest wind 11 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Showers
    Likely then
    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of showers before 1pm. Partly sunny, with a high near 53. Breezy, with a north wind 17 to 22 mph, with gusts as high as 36 mph.

    High: 53 °F

    Chance
    Showers and
    Breezy

  • Friday Night

    Friday Night: Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 31. North wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 31 °F

    Mostly Clear
    then Frost

  • Saturday

    Saturday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 57. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 57 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 41. South wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 41 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 63. Breezy, with a south wind 11 to 16 mph, with gusts as high as 24 mph.

    High: 63 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44. Southwest wind 5 to 9 mph, with gusts as high as 20 mph.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 10 percent chance of showers after 5am. Cloudy, with a low around 49. East wind 5 to 7 mph.
Thursday
Showers, mainly after 10am. High near 58. East wind 5 to 7 mph becoming light and variable. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
Showers likely, mainly before 11pm. Mostly cloudy, with a low around 43. Northwest wind 11 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
A 40 percent chance of showers before 1pm. Partly sunny, with a high near 53. Breezy, with a north wind 17 to 22 mph, with gusts as high as 36 mph.
Friday Night
Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 31. North wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Saturday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 57. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 22 mph.
Saturday Night
Clear, with a low around 41. South wind 7 to 10 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 63. Breezy, with a south wind 11 to 16 mph, with gusts as high as 24 mph.
Sunday Night
Partly cloudy, with a low around 44. Southwest wind 5 to 9 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 66. Light southwest wind.
Monday Night
Partly cloudy, with a low around 45. Calm wind.
Tuesday
Sunny, with a high near 69. Calm wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 50. South wind 3 to 5 mph.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 70. South wind 5 to 10 mph, with gusts as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Castalia IA
 43.08°N 91.62°W
Last Update:
6:46 pm CDT Oct 14, 2026
Forecast Valid:
9pm CDT Oct 14, 2026-6pm CDT Oct 21, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation