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.

Overcast

34°F

1°C

Humidity 100%
Wind Speed N 10 G 16 mph
Barometer 29.78 in
Dewpoint 34°F (1°C)
Visibility 9.00 mi
Wind Chill26°F (-3°C)
Last update 11 Mar 3:35 am CDT
Extended Forecast for

6 Miles SW Castalia IA

  • Overnight

    Overnight: Cloudy, with a steady temperature around 36. North wind around 11 mph, with gusts as high as 20 mph.

    Low: 36 °F

    Cloudy

  • Wednesday

    Wednesday: Snow, mainly before 1pm. High near 39. Breezy, with a north wind 13 to 21 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    High: 39 °F

    Breezy. Snow
    then Chance
    Snow

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 24. Northwest wind 5 to 10 mph becoming light west after midnight.

    Low: 24 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 46. Breezy, with a light and variable wind becoming south 11 to 16 mph in the morning. Winds could gust as high as 24 mph.

    High: 46 °F

    Mostly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Thursday Night

    Thursday Night: Rain showers before 4am, then a chance of snow showers. Low around 30. Windy, with a south wind 17 to 22 mph becoming west 24 to 29 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 40. Windy, with a northwest wind 21 to 29 mph, with gusts as high as 41 mph.

    High: 40 °F

    Chance Snow
    Showers and
    Windy then
    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 25. Northwest wind 5 to 9 mph becoming calm in the evening.

    Low: 25 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: A 30 percent chance of snow, mainly after 1pm. Cloudy, with a high near 39. Southeast wind 5 to 10 mph.

    High: 39 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A chance of rain and snow before 1am, then snow. Low around 28. Breezy, with an east wind 10 to 16 mph. Chance of precipitation is 80%.

    Low: 28 °F

    Chance
    Rain/Snow
    then
    Rain/Snow and
    Breezy

Detailed Forecast

Overnight
Cloudy, with a steady temperature around 36. North wind around 11 mph, with gusts as high as 20 mph.
Wednesday
Snow, mainly before 1pm. High near 39. Breezy, with a north wind 13 to 21 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Wednesday Night
Mostly clear, with a low around 24. Northwest wind 5 to 10 mph becoming light west after midnight.
Thursday
Increasing clouds, with a high near 46. Breezy, with a light and variable wind becoming south 11 to 16 mph in the morning. Winds could gust as high as 24 mph.
Thursday Night
Rain showers before 4am, then a chance of snow showers. Low around 30. Windy, with a south wind 17 to 22 mph becoming west 24 to 29 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 40. Windy, with a northwest wind 21 to 29 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 9 mph becoming calm in the evening.
Saturday
A 30 percent chance of snow, mainly after 1pm. Cloudy, with a high near 39. Southeast wind 5 to 10 mph.
Saturday Night
A chance of rain and snow before 1am, then snow. Low around 28. Breezy, with an east wind 10 to 16 mph. Chance of precipitation is 80%.
Sunday
Snow likely. Mostly cloudy, with a high near 34. Breezy, with a northeast wind 16 to 24 mph, with gusts as high as 32 mph. Chance of precipitation is 70%.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 8. Blustery, with a northwest wind 21 to 24 mph, with gusts as high as 33 mph.
Monday
Mostly sunny, with a high near 22. Blustery, with a northwest wind around 18 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 5. Northwest wind 6 to 13 mph.
Tuesday
A 20 percent chance of snow. Partly sunny, with a high near 27. Northwest wind 5 to 8 mph becoming south in the afternoon.
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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:
2:52 am CDT Mar 11, 2026
Forecast Valid:
3am CDT Mar 11, 2026-6pm CDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation