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

77°F

25°C

Humidity 100%
Wind Speed SE 7 mph
Barometer 29.86 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 3 Sep 9:15 pm CDT
Extended Forecast for

Postville IA

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms after 4am. Mostly clear, with a low around 71. South wind around 7 mph.

    Low: 71 °F

    Mostly Clear
    then Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before 9am. Mostly sunny, with a high near 89. Heat index values as high as 99. South wind around 6 mph becoming light and variable in the afternoon.

    High: 89 °F

    Slight Chance
    T-storms then
    Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 67. Calm wind. Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 86. Light northeast wind.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 64. Calm wind becoming east around 5 mph.

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 81. Southeast wind 3 to 5 mph.

    High: 81 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 62. Southeast wind 3 to 6 mph.

    Low: 62 °F

    Mostly Cloudy

  • Labor Day

    Labor Day: Partly sunny, with a high near 80. Southeast wind 5 to 8 mph.

    High: 80 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. Southeast wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 64 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms after 4am. Mostly clear, with a low around 71. South wind around 7 mph.
Friday
A 20 percent chance of showers and thunderstorms before 9am. Mostly sunny, with a high near 89. Heat index values as high as 99. South wind around 6 mph becoming light and variable in the afternoon.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 67. Calm wind. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 86. Light northeast wind.
Saturday Night
Partly cloudy, with a low around 64. Calm wind becoming east around 5 mph.
Sunday
Partly sunny, with a high near 81. Southeast wind 3 to 5 mph.
Sunday Night
Mostly cloudy, with a low around 62. Southeast wind 3 to 6 mph.
Labor Day
Partly sunny, with a high near 80. Southeast wind 5 to 8 mph.
Monday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. Southeast wind 8 to 10 mph, with gusts as high as 20 mph.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 85. South wind around 11 mph, with gusts as high as 20 mph.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 68. South wind around 8 mph. Chance of precipitation is 60%.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 84. West wind 6 to 8 mph.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 63. Southwest wind around 5 mph becoming northwest after midnight.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 79. West wind 3 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Postville IA
 43.08°N 91.56°W
Last Update:
8:16 pm CDT Sep 3, 2026
Forecast Valid:
9pm CDT Sep 3, 2026-6pm CDT Sep 10, 2026
 
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Additional Resources

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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