National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Decorah (KDEH)

Lat: 43.28°NLon: 91.73°WElev: 1158ft.

Fair

73°F

23°C

Humidity 69%
Wind Speed Vrbl 5 mph
Barometer 30.02 in
Dewpoint 63°F (17°C)
Visibility 9.00 mi
Last update 13 Jul 10:15 am CDT
Extended Forecast for

Castalia IA

  • Today

    Today: Areas of smoke. Mostly sunny, with a high near 81. Southwest wind 3 to 7 mph.

    High: 81 °F

    Areas Smoke

  • Tonight

    Tonight: Mostly clear, with a low around 63. Southwest wind 3 to 6 mph.

    Low: 63 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 86. Southwest wind 5 to 7 mph.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. South wind around 6 mph.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85. South wind 6 to 10 mph.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. South wind around 6 mph. Chance of precipitation is 30%.

    Low: 68 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. Southwest wind 6 to 10 mph.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 59. North wind 7 to 9 mph.

    Low: 59 °F

    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers and thunderstorms. Partly sunny, with a high near 75. North wind around 8 mph. Chance of precipitation is 20%.

    High: 75 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
Areas of smoke. Mostly sunny, with a high near 81. Southwest wind 3 to 7 mph.
Tonight
Mostly clear, with a low around 63. Southwest wind 3 to 6 mph.
Monday
Sunny, with a high near 86. Southwest wind 5 to 7 mph.
Monday Night
Mostly clear, with a low around 67. South wind around 6 mph.
Tuesday
Sunny, with a high near 85. South wind 6 to 10 mph.
Tuesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. South wind around 6 mph. Chance of precipitation is 30%.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. Southwest wind 6 to 10 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 59. North wind 7 to 9 mph.
Thursday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 75. North wind around 8 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 57. North wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 75. East wind around 6 mph becoming south in the afternoon.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South wind around 6 mph.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 78. South wind 6 to 8 mph becoming southwest in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castalia IA
 43.13°N 91.68°W
Last Update:
9:30 am CDT Jul 13, 2025
Forecast Valid:
10am CDT Jul 13, 2025-6pm CDT Jul 19, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation