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Current conditions at
Decorah (KDEH)
Lat: 43.28°NLon: 91.73°WElev: 1158ft.
Overcast
64°F
18°C
Humidity | 100% |
Wind Speed | Calm |
Barometer | 30.02 in |
Dewpoint | 64°F (18°C) |
Visibility | 8.00 mi |
Last update | 18 Sep 4:15 am CDT |
Extended Forecast for
Castalia IA
Overnight
Low: 62 °F
Slight Chance
T-stormsThursday
High: 81 °F
Slight Chance
T-stormsThursday Night
Low: 62 °F
Chance
T-storms then
Showers
LikelyFriday
High: 74 °F
Showers
LikelyFriday Night
Low: 58 °F
Showers
LikelySaturday
High: 74 °F
Chance
ShowersSaturday Night
Low: 60 °F
Chance
T-stormsSunday
High: 76 °F
Chance
Showers then
Chance
T-stormsSunday Night
Low: 60 °F
Chance
T-storms
Detailed Forecast
Overnight
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Calm wind.
Thursday
A slight chance of showers and thunderstorms before 11am, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 81. Light and variable wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 20%.
Thursday Night
Showers and thunderstorms likely, mainly before 3am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 62. Southeast wind 3 to 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers likely and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 74. South wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 58. Light southeast wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 74. Calm wind becoming south around 6 mph in the morning. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Light south wind.
Sunday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76. South wind 3 to 7 mph. Chance of precipitation is 50%.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. South wind around 5 mph.
Monday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 76. Southwest wind 3 to 6 mph.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58. South wind 3 to 5 mph.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 72. West wind 6 to 8 mph.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 54. North wind around 6 mph.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 71. North wind 6 to 8 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
4:28 am CDT Sep 18, 2025
4am CDT Sep 18, 2025-6pm CDT Sep 24, 2025