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

68°F

20°C

Humidity 94%
Wind Speed Calm
Barometer 29.95 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 2 Sep 6:15 am CDT
Extended Forecast for

4 Miles SSW Saint Lucas IA

  • Today

    Today: Scattered showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 2pm. Mostly sunny, with a high near 87. Northeast wind 5 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Scattered
    T-storms then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 3am. Partly cloudy, with a low around 69. Calm wind becoming south around 5 mph after midnight. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Mostly Clear
    then Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly before 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 86. Southeast wind 5 to 8 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 70. South wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly sunny, with a high near 87. South wind around 7 mph. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 69. Light south wind.

    Low: 69 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 86. Southeast wind 3 to 5 mph.

    High: 86 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly clear, with a low around 68. East wind 3 to 5 mph.

    Low: 68 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 83. Southeast wind 3 to 6 mph.

    High: 83 °F

    Chance
    T-storms

Detailed Forecast

Today
Scattered showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 2pm. Mostly sunny, with a high near 87. Northeast wind 5 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 3am. Partly cloudy, with a low around 69. Calm wind becoming south around 5 mph after midnight. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A 40 percent chance of showers and thunderstorms, mainly before 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 86. Southeast wind 5 to 8 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 70. South wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly sunny, with a high near 87. South wind around 7 mph. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 69. Light south wind.
Saturday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 86. Southeast wind 3 to 5 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly clear, with a low around 68. East wind 3 to 5 mph.
Sunday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 83. Southeast wind 3 to 6 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65. Southeast wind around 6 mph.
Labor Day
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. Southeast wind 6 to 10 mph.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Southeast wind 8 to 11 mph.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. Southeast wind 11 to 14 mph, with gusts as high as 22 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Saint Lucas IA
 43°N 91.95°W
Last Update:
5:46 am CDT Sep 2, 2026
Forecast Valid:
6am CDT Sep 2, 2026-6pm CDT Sep 8, 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