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.

Rain

46°F

8°C

Humidity 100%
Wind Speed NE 6 G 15 mph
Barometer 30.05 in
Dewpoint 46°F (8°C)
Visibility 4.00 mi
Wind Chill43°F (6°C)
Last update 25 Apr 5:15 am CDT
Extended Forecast for

Castalia IA

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Steady temperature around 48. Northeast wind around 9 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 48 °F

    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm before 10am, then a chance of showers. High near 54. North wind 10 to 13 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 54 °F

    Showers then
    Chance
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 34. North wind 7 to 11 mph.

    Low: 34 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 59. East wind 7 to 9 mph.

    High: 59 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40. East wind 5 to 7 mph.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers. Partly sunny, with a high near 61. Southeast wind 8 to 15 mph.

    High: 61 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers, with thunderstorms also possible after 10pm. Mostly cloudy, with a low around 52. Southeast wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.

    Low: 52 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 75. Breezy, with a south wind 15 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.

    High: 75 °F

    Showers
    Likely and
    Breezy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 51. Breezy, with a southwest wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.

    Low: 51 °F

    Showers and
    Breezy

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Steady temperature around 48. Northeast wind around 9 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm before 10am, then a chance of showers. High near 54. North wind 10 to 13 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 20 percent chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 34. North wind 7 to 11 mph.
Saturday
Sunny, with a high near 59. East wind 7 to 9 mph.
Saturday Night
Partly cloudy, with a low around 40. East wind 5 to 7 mph.
Sunday
A 20 percent chance of showers. Partly sunny, with a high near 61. Southeast wind 8 to 15 mph.
Sunday Night
A chance of showers, with thunderstorms also possible after 10pm. Mostly cloudy, with a low around 52. Southeast wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 75. Breezy, with a south wind 15 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.
Monday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 51. Breezy, with a southwest wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 61. Breezy, with a northwest wind around 16 mph, with gusts as high as 24 mph.
Tuesday Night
Partly cloudy, with a low around 39. Northeast wind 6 to 10 mph.
Wednesday
Sunny, with a high near 63. East wind around 7 mph becoming southeast in the afternoon.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 45. Southeast wind around 7 mph.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 65. Southeast wind 7 to 10 mph becoming northwest in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Castalia IA
 43.1°N 91.68°W
Last Update:
3:45 am CDT Apr 25, 2025
Forecast Valid:
5am CDT Apr 25, 2025-6pm CDT May 1, 2025
 
Forecast Discussion
 
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Additional Resources

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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