Hazardous Weather Conditions
Current conditions at
Decorah (KDEH)
Lat: 43.28°NLon: 91.73°WElev: 1158ft.
Fair
28°F
-2°C
| Humidity | 69% |
| Wind Speed | SW 8 G 14 mph |
| Barometer | 29.46 in |
| Dewpoint | 19°F (-7°C) |
| Visibility | 10.00 mi |
| Wind Chill | 20°F (-7°C) |
| Last update | 24 Feb 1:15 pm CST |
Extended Forecast for
Castalia IA
This Afternoon

High: 32 °F
Slight Chance
SnowTonight

Low: 13 °F
Mostly Clear
Wednesday

High: 23 °F
Mostly Sunny
Wednesday Night
Low: 11 °F
Partly Cloudy
then Slight
Chance SnowThursday

High: 35 °F
Mostly Sunny
Thursday Night

Low: 24 °F
Mostly Clear
Friday

High: 47 °F
Sunny
Friday Night

Low: 21 °F
Partly Cloudy
Saturday

High: 27 °F
Chance Snow
Detailed Forecast
This Afternoon
A 20 percent chance of snow before 2pm. Mostly cloudy, with a high near 32. South wind 8 to 11 mph becoming west. Winds could gust as high as 23 mph.
Tonight
Mostly cloudy during the early evening, then becoming mostly clear, with a low around 13. Wind chill values as low as zero. Northwest wind 11 to 13 mph, with gusts as high as 29 mph.
Wednesday
Mostly sunny, with a high near 23. Wind chill values as low as -1. Northwest wind 5 to 13 mph, with gusts as high as 25 mph.
Wednesday Night
A 20 percent chance of snow after midnight. Partly cloudy, with a low around 11. Light and variable wind.
Thursday
Mostly sunny, with a high near 35. Southwest wind 5 to 9 mph.
Thursday Night
Mostly clear, with a low around 24. Southwest wind 6 to 9 mph.
Friday
Sunny, with a high near 47. Southwest wind 9 to 13 mph, with gusts as high as 21 mph.
Friday Night
Partly cloudy, with a low around 21. West wind around 10 mph becoming north after midnight. Winds could gust as high as 18 mph.
Saturday
A 40 percent chance of snow. Partly sunny, with a high near 27. North wind around 10 mph.
Saturday Night
Partly cloudy, with a low around 10. North wind 7 to 9 mph.
Sunday
A 30 percent chance of snow. Mostly sunny, with a high near 25. East wind around 7 mph.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 12. East wind around 6 mph.
Monday
Partly sunny, with a high near 30. East wind 6 to 9 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
1:27 pm CST Feb 24, 2026
1pm CST Feb 24, 2026-6pm CST Mar 2, 2026



