National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Decorah (KDEH)

Lat: 43.28°NLon: 91.73°WElev: 1158ft.

Partly Cloudy

59°F

15°C

Humidity 100%
Wind Speed S 12 G 23 mph
Barometer 29.60 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 6 Mar 10:55 pm CST
Extended Forecast for

Castalia IA

  • Tonight

    Tonight: Showers and thunderstorms before 5am, then a chance of showers. Patchy fog. Low around 36. Southwest wind 11 to 15 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 36 °F

    Showers and
    Patchy Fog

  • Saturday

    Saturday: A 30 percent chance of showers before 7am. Patchy fog before 7am. Otherwise, cloudy, then gradually becoming mostly sunny, with a temperature falling to around 35 by 9am. Breezy, with a northwest wind 11 to 16 mph, with gusts as high as 26 mph.

    High: 39 °F⇓

    Chance
    Showers and
    Patchy Fog
    then Partly
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 33. Southwest wind 7 to 15 mph, with gusts as high as 24 mph.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 58. Southwest wind around 15 mph, with gusts as high as 24 mph.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43. Breezy, with a southwest wind 11 to 16 mph, with gusts as high as 25 mph.

    Low: 43 °F

    Mostly Clear
    and Breezy

  • Monday

    Monday: Sunny, with a high near 63. Southwest wind 7 to 10 mph becoming north in the afternoon. Winds could gust as high as 18 mph.

    High: 63 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 37. North wind 6 to 10 mph becoming northeast after midnight.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 40 percent chance of showers after noon. Mostly sunny, with a high near 54. East wind 10 to 14 mph.

    High: 54 °F

    Sunny then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of rain showers before midnight, then a chance of rain and snow showers. Cloudy, with a low around 30. North wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    Low: 30 °F

    Chance
    Showers then
    Chance
    Rain/Snow

Detailed Forecast

Tonight
Showers and thunderstorms before 5am, then a chance of showers. Patchy fog. Low around 36. Southwest wind 11 to 15 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A 30 percent chance of showers before 7am. Patchy fog before 7am. Otherwise, cloudy, then gradually becoming mostly sunny, with a temperature falling to around 35 by 9am. Breezy, with a northwest wind 11 to 16 mph, with gusts as high as 26 mph.
Saturday Night
Mostly clear, with a low around 33. Southwest wind 7 to 15 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 58. Southwest wind around 15 mph, with gusts as high as 24 mph.
Sunday Night
Mostly clear, with a low around 43. Breezy, with a southwest wind 11 to 16 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 63. Southwest wind 7 to 10 mph becoming north in the afternoon. Winds could gust as high as 18 mph.
Monday Night
Mostly clear, with a low around 37. North wind 6 to 10 mph becoming northeast after midnight.
Tuesday
A 40 percent chance of showers after noon. Mostly sunny, with a high near 54. East wind 10 to 14 mph.
Tuesday Night
A chance of rain showers before midnight, then a chance of rain and snow showers. Cloudy, with a low around 30. North wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Wednesday
A 30 percent chance of snow showers, mainly before noon. Mostly cloudy, with a high near 42. Breezy, with a northwest wind 13 to 16 mph, with gusts as high as 24 mph.
Wednesday Night
Partly cloudy, with a low around 23. Northwest wind 6 to 11 mph, with gusts as high as 20 mph.
Thursday
Partly sunny, with a high near 45. Northwest wind 6 to 14 mph becoming south in the afternoon.
Thursday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 34. Breezy, with a south wind 11 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Friday
Mostly cloudy, with a high near 49. Breezy, with a southwest wind 15 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Castalia IA
 43.13°N 91.68°W
Last Update:
10:02 pm CST Mar 6, 2026
Forecast Valid:
11pm CST Mar 6, 2026-6pm CDT Mar 13, 2026
 
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Chance of Precipitation