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

46°F

8°C

Humidity 100%
Wind Speed N 7 mph
Barometer 30.30 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 20 May 7:55 am CDT
Extended Forecast for

4 Miles NE Castalia IA

  • Today

    Today: Increasing clouds, with a high near 61. North wind 7 to 9 mph.

    High: 61 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 43. Northeast wind 3 to 6 mph.

    Low: 43 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 60. East wind 7 to 9 mph.

    High: 60 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 44. East wind 7 to 9 mph.

    Low: 44 °F

    Mostly Cloudy

  • Friday

    Friday: A 50 percent chance of showers after 1pm. Mostly cloudy, with a high near 61. East wind 8 to 13 mph, with gusts as high as 21 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 47. East wind 5 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Showers
    Likely

  • Saturday

    Saturday: A 20 percent chance of showers. Partly sunny, with a high near 68. East wind around 5 mph becoming southwest in the afternoon.

    High: 68 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 51. Light and variable wind.

    Low: 51 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 76. Calm wind becoming west around 5 mph in the afternoon.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 61. North wind 7 to 9 mph.
Tonight
Mostly cloudy, with a low around 43. Northeast wind 3 to 6 mph.
Thursday
Mostly cloudy, with a high near 60. East wind 7 to 9 mph.
Thursday Night
Mostly cloudy, with a low around 44. East wind 7 to 9 mph.
Friday
A 50 percent chance of showers after 1pm. Mostly cloudy, with a high near 61. East wind 8 to 13 mph, with gusts as high as 21 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 47. East wind 5 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 68. East wind around 5 mph becoming southwest in the afternoon.
Saturday Night
Mostly cloudy, with a low around 51. Light and variable wind.
Sunday
Mostly sunny, with a high near 76. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 52. Calm wind.
Memorial Day
Mostly sunny, with a high near 82. Calm wind becoming south around 6 mph in the morning.
Monday Night
Mostly clear, with a low around 57. Light south wind.
Tuesday
Mostly sunny, with a high near 84. Southeast wind 3 to 8 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Castalia IA
 43.17°N 91.62°W
Last Update:
7:26 am CDT May 20, 2026
Forecast Valid:
8am CDT May 20, 2026-6pm CDT May 26, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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