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Current conditions at
Decorah (KDEH)
Lat: 43.28°NLon: 91.73°WElev: 1158ft.
Mostly Cloudy
27°F
-3°C
| Humidity | 100% |
| Wind Speed | Vrbl 7 G 21 mph |
| Barometer | 30.23 in |
| Dewpoint | 27°F (-3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 19°F (-7°C) |
| Last update | 11 Jan 6:55 pm CST |
Extended Forecast for
Castalia IA
Tonight

Low: 24 °F
Increasing
CloudsMonday

High: 40 °F
Decreasing
CloudsMonday Night

Low: 30 °F
Mostly Cloudy
Tuesday
High: 43 °F
Breezy.
Partly Sunny
then Slight
Chance RainTuesday Night

Low: 23 °F
Mostly Cloudy
and BlusteryWednesday

High: 26 °F
Partly Sunny
and BlusteryWednesday Night
Low: 11 °F
Mostly Clear
and Blustery
then Mostly
ClearThursday
High: 26 °F
Mostly Sunny
then Slight
Chance SnowThursday Night

Low: 22 °F
Chance Snow
Detailed Forecast
Tonight
Increasing clouds, with a low around 24. Southwest wind 8 to 15 mph, with gusts as high as 26 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 40. Southwest wind 7 to 9 mph, with gusts as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 30. Southwest wind 6 to 11 mph.
Tuesday
A 20 percent chance of rain after noon. Partly sunny, with a high near 43. Breezy, with a west wind 15 to 18 mph, with gusts as high as 29 mph.
Tuesday Night
Mostly cloudy, with a low around 23. Blustery, with a northwest wind 17 to 24 mph, with gusts as high as 34 mph.
Wednesday
Partly sunny, with a high near 26. Blustery, with a north wind 21 to 25 mph, with gusts as high as 36 mph.
Wednesday Night
Mostly clear, with a low around 11. Blustery, with a north wind 11 to 16 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 24 mph.
Thursday
A 20 percent chance of snow after noon. Partly sunny, with a high near 26. North wind 5 to 10 mph becoming south in the afternoon.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 22. Southwest wind around 10 mph.
Friday
Snow likely, mainly after noon. Mostly cloudy, with a high near 30. West wind 10 to 14 mph. Chance of precipitation is 60%.
Friday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 10. Northwest wind around 14 mph.
Saturday
Mostly cloudy, with a high near 16. Northwest wind around 14 mph.
Saturday Night
Mostly cloudy, with a low around 5. West wind 11 to 13 mph.
Sunday
Partly sunny, with a high near 20. West wind 11 to 13 mph.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Castalia IA
43.1°N 91.68°W
43.1°N 91.68°W
5:11 pm CST Jan 11, 2026
7pm CST Jan 11, 2026-6pm CST Jan 18, 2026


