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.

Light Snow

32°F

0°C

Humidity 100%
Wind Speed NW 13 mph
Barometer 29.83 in
Dewpoint 32°F (0°C)
Visibility 1.00 mi
Wind Chill22°F (-6°C)
Last update 11 Mar 8:15 am CDT
Extended Forecast for

Castalia IA

  • Today

    Today: Snow, mainly before 1pm. High near 38. Breezy, with a north wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 2 inches possible.

    High: 38 °F

    Breezy. Snow
    then Snow
    Likely

  • Tonight

    Tonight: Mostly clear, with a low around 24. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of rain and snow showers between 1pm and 4pm, then a slight chance of rain showers after 4pm. Increasing clouds, with a high near 45. Breezy, with a west wind 5 to 10 mph becoming south 11 to 16 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 20%.

    High: 45 °F

    Mostly Sunny
    then Slight
    Chance
    Rain/Snow and
    Breezy

  • Thursday Night

    Thursday Night: Rain showers before 4am, then a chance of snow showers. Low around 30. Windy, with a south wind 18 to 23 mph becoming west 25 to 30 mph after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 30 °F

    Showers and
    Breezy then
    Rain/Snow and
    Windy

  • Friday

    Friday: A 30 percent chance of snow showers before 7am. Partly sunny, with a high near 39. Windy, with a northwest wind 21 to 30 mph, with gusts as high as 41 mph.

    High: 39 °F

    Windy. Chance
    Snow Showers
    then Mostly
    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 25. Northwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 25 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: A 40 percent chance of snow. Cloudy, with a high near 38. Southeast wind 6 to 9 mph.

    High: 38 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A chance of rain and snow before 1am, then snow. Low around 27. Breezy, with an east wind 11 to 17 mph. Chance of precipitation is 80%.

    Low: 27 °F

    Chance
    Rain/Snow
    then
    Rain/Snow and
    Breezy

  • Sunday

    Sunday: Snow. High near 33. Breezy, with a northeast wind 17 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 80%.

    High: 33 °F

    Snow and
    Breezy

Detailed Forecast

Today
Snow, mainly before 1pm. High near 38. Breezy, with a north wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
Mostly clear, with a low around 24. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Thursday
A slight chance of rain and snow showers between 1pm and 4pm, then a slight chance of rain showers after 4pm. Increasing clouds, with a high near 45. Breezy, with a west wind 5 to 10 mph becoming south 11 to 16 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 20%.
Thursday Night
Rain showers before 4am, then a chance of snow showers. Low around 30. Windy, with a south wind 18 to 23 mph becoming west 25 to 30 mph after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Friday
A 30 percent chance of snow showers before 7am. Partly sunny, with a high near 39. Windy, with a northwest wind 21 to 30 mph, with gusts as high as 41 mph.
Friday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 25. Northwest wind 5 to 10 mph becoming light and variable after midnight.
Saturday
A 40 percent chance of snow. Cloudy, with a high near 38. Southeast wind 6 to 9 mph.
Saturday Night
A chance of rain and snow before 1am, then snow. Low around 27. Breezy, with an east wind 11 to 17 mph. Chance of precipitation is 80%.
Sunday
Snow. High near 33. Breezy, with a northeast wind 17 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 80%.
Sunday Night
A 30 percent chance of snow, mainly before 1am. Mostly cloudy, with a low around 9. Blustery, with a northwest wind 22 to 25 mph, with gusts as high as 34 mph.
Monday
Mostly sunny, with a high near 21. Blustery, with a northwest wind 17 to 20 mph, with gusts as high as 28 mph.
Monday Night
Partly cloudy, with a low around 5. Northwest wind 8 to 14 mph.
Tuesday
A 20 percent chance of snow. Partly sunny, with a high near 27. Northwest wind 6 to 8 mph becoming south in the afternoon.
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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:
6:51 am CDT Mar 11, 2026
Forecast Valid:
8am CDT Mar 11, 2026-6pm CDT Mar 17, 2026
 
Forecast Discussion
 
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