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.

Fair

73°F

23°C

Humidity 83%
Wind Speed Vrbl 7 mph
Barometer 30.02 in
Dewpoint 68°F (20°C)
Visibility 9.00 mi
Last update 15 Aug 8:55 am CDT
Extended Forecast for

Ossian IA

  • Today

    Today: Mostly sunny, with a high near 87. South wind 7 to 10 mph.

    High: 87 °F

    Mostly Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 71. Southeast wind around 7 mph.

    Low: 71 °F

    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 88. Heat index values as high as 95. South wind around 8 mph. Chance of precipitation is 20%.

    High: 88 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70. East wind around 6 mph becoming southeast in the evening.

    Low: 70 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 85. Southeast wind 6 to 9 mph.

    High: 85 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Southeast wind around 8 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. South wind 7 to 9 mph becoming southwest in the afternoon.

    High: 86 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. West wind around 6 mph becoming east after midnight.

    Low: 67 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81. Northeast wind around 7 mph becoming northwest in the afternoon.

    High: 81 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 87. South wind 7 to 10 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 71. Southeast wind around 7 mph.
Saturday
A slight chance of showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 88. Heat index values as high as 95. South wind around 8 mph. Chance of precipitation is 20%.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70. East wind around 6 mph becoming southeast in the evening.
Sunday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 85. Southeast wind 6 to 9 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Southeast wind around 8 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. South wind 7 to 9 mph becoming southwest in the afternoon.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. West wind around 6 mph becoming east after midnight.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81. Northeast wind around 7 mph becoming northwest in the afternoon.
Tuesday Night
Partly cloudy, with a low around 64. North wind around 6 mph.
Wednesday
Mostly sunny, with a high near 79. Northeast wind around 6 mph.
Wednesday Night
Partly cloudy, with a low around 61. Northeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 80. Light northeast wind.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ossian IA
 43.15°N 91.77°W
Last Update:
7:29 am CDT Aug 15, 2025
Forecast Valid:
9am CDT Aug 15, 2025-6pm CDT Aug 21, 2025
 
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