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.

Overcast

75°F

24°C

Humidity 94%
Wind Speed S 3 mph
Barometer 29.86 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 4 Sep 4:15 am CDT
Extended Forecast for

Dorchester IA

  • Overnight

    Overnight: A 40 percent chance of showers. Mostly cloudy, with a low around 70. South wind around 5 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 70 °F

    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers, mainly before 1pm. Mostly sunny, with a high near 89. Heat index values as high as 97. Southwest wind around 6 mph.

    High: 89 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Patchy fog after midnight. Otherwise, partly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Areas of fog before 9am. Otherwise, mostly sunny, with a high near 87. Northeast wind 3 to 5 mph.

    High: 87 °F

    Areas Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 83. Light southeast wind.

    High: 83 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 63. Light southeast wind.

    Low: 63 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Labor Day

    Labor Day: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 82. Calm wind becoming south 5 to 7 mph in the morning.

    High: 82 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. Southeast wind around 8 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
A 40 percent chance of showers. Mostly cloudy, with a low around 70. South wind around 5 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 30 percent chance of showers, mainly before 1pm. Mostly sunny, with a high near 89. Heat index values as high as 97. Southwest wind around 6 mph.
Friday Night
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 68. Calm wind.
Saturday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 87. Northeast wind 3 to 5 mph.
Saturday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 65. Calm wind.
Sunday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 83. Light southeast wind.
Sunday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 63. Light southeast wind.
Labor Day
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 82. Calm wind becoming south 5 to 7 mph in the morning.
Monday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. Southeast wind around 8 mph, with gusts as high as 20 mph.
Tuesday
Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. South wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South wind 5 to 8 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Wednesday
Mostly sunny, with a high near 86. West wind 3 to 6 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62. Southwest wind around 5 mph becoming calm in the evening.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 80. Northwest wind 3 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dorchester IA
 43.47°N 91.52°W
Last Update:
3:47 am CDT Sep 4, 2026
Forecast Valid:
4am CDT Sep 4, 2026-6pm CDT Sep 10, 2026
 
Forecast Discussion
 
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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