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

82°F

28°C

Humidity 70%
Wind Speed Calm
Barometer 29.92 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 1 Sep 6:35 pm CDT
Extended Forecast for

Dorchester IA

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly between 1am and 5am. Increasing clouds, with a low around 69. Calm wind becoming north around 5 mph after midnight. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 10 percent chance of showers and thunderstorms before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the morning.

    High: 88 °F

    Slight Chance
    T-storms then
    Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly after 3am. Increasing clouds, with a low around 70. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Mostly Clear
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms before 7am, then showers likely and possibly a thunderstorm between 7am and 1pm. Partly sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 70. Light south wind. 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. Partly sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 88. Light southeast wind.

    High: 88 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly between 1am and 5am. Increasing clouds, with a low around 69. Calm wind becoming north around 5 mph after midnight. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A 10 percent chance of showers and thunderstorms before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the morning.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly after 3am. Increasing clouds, with a low around 70. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers and thunderstorms before 7am, then showers likely and possibly a thunderstorm between 7am and 1pm. Partly sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%. 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, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 70. Light south wind. 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. Partly sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 20%.
Saturday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 88. Light southeast wind.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 67. Calm wind.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 40%.
Sunday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 64. Light east wind.
Labor Day
A 20 percent chance of showers. Partly sunny, with a high near 80. Calm wind becoming east around 6 mph in the morning.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 61. Southeast wind around 6 mph.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 80. South wind 7 to 10 mph, with gusts as high as 21 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dorchester IA
 43.47°N 91.49°W
Last Update:
6:41 pm CDT Sep 1, 2026
Forecast Valid:
6pm CDT Sep 1, 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