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

-7°C

19°F

Humidity 93%
Wind Speed Vrbl 7 km/h
Barometer 29.93 in
Dewpoint -8°C (18°F)
Visibility 16 km
Wind Chill-11°C (12°F)
Last update 11 Dec 4:15 pm CST
Extended Forecast for

Postville IA

  • This Afternoon

    This Afternoon: A chance of flurries before 5pm, then a slight chance of snow after 5pm. Cloudy, with a high near -6. Calm wind. Chance of precipitation is 20%.

    High: -6 °C

    Slight Chance
    Snow

  • Tonight

    Tonight: A chance of snow before 11pm, then a chance of flurries between 11pm and midnight. Cloudy, with a low around -11. Calm wind. Chance of precipitation is 30%.

    Low: -11 °C

    Chance Snow
    then Mostly
    Cloudy

  • Friday

    Friday: A 30 percent chance of snow, mainly before 10am. Mostly cloudy, with a high near -6. Wind chill values as low as -18. Light northwest wind increasing to 18 to 23 km/h in the morning. Winds could gust as high as 37 km/h.

    High: -6 °C

    Chance Snow
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -20. Wind chill values as low as -29. Northwest wind 16 to 23 km/h.

    Low: -20 °C

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of snow. Mostly cloudy and cold, with a high near -17. Northwest wind 16 to 18 km/h, with gusts as high as 32 km/h.

    High: -17 °C

    Slight Chance
    Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around -25. Northwest wind 13 to 16 km/h, with gusts as high as 29 km/h.

    Low: -25 °C

    Mostly Clear

  • Sunday

    Sunday: Sunny and cold, with a high near -18. Northwest wind 5 to 13 km/h becoming southwest in the afternoon.

    High: -18 °C

    Cold

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -23. South wind 5 to 10 km/h increasing to 18 to 23 km/h after midnight.

    Low: -23 °C

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near -5. Southwest wind 18 to 23 km/h decreasing to 11 to 16 km/h in the afternoon.

    High: -5 °C

    Partly Sunny

Detailed Forecast

This Afternoon
A chance of flurries before 5pm, then a slight chance of snow after 5pm. Cloudy, with a high near -6. Calm wind. Chance of precipitation is 20%.
Tonight
A chance of snow before 11pm, then a chance of flurries between 11pm and midnight. Cloudy, with a low around -11. Calm wind. Chance of precipitation is 30%.
Friday
A 30 percent chance of snow, mainly before 10am. Mostly cloudy, with a high near -6. Wind chill values as low as -18. Light northwest wind increasing to 18 to 23 km/h in the morning. Winds could gust as high as 37 km/h.
Friday Night
Mostly cloudy, with a low around -20. Wind chill values as low as -29. Northwest wind 16 to 23 km/h.
Saturday
A 20 percent chance of snow. Mostly cloudy and cold, with a high near -17. Northwest wind 16 to 18 km/h, with gusts as high as 32 km/h.
Saturday Night
Mostly clear, with a low around -25. Northwest wind 13 to 16 km/h, with gusts as high as 29 km/h.
Sunday
Sunny and cold, with a high near -18. Northwest wind 5 to 13 km/h becoming southwest in the afternoon.
Sunday Night
Partly cloudy, with a low around -23. South wind 5 to 10 km/h increasing to 18 to 23 km/h after midnight.
Monday
Partly sunny, with a high near -5. Southwest wind 18 to 23 km/h decreasing to 11 to 16 km/h in the afternoon.
Monday Night
Mostly cloudy, with a low around -12. West wind 5 to 10 km/h.
Tuesday
Partly sunny, with a high near 1. South wind 8 to 18 km/h, with gusts as high as 32 km/h.
Tuesday Night
Mostly cloudy, with a low around -4. West wind 11 to 16 km/h, with gusts as high as 29 km/h.
Wednesday
Mostly cloudy, with a high near 3. West wind 11 to 16 km/h becoming south in the afternoon.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around -6. South wind 16 to 18 km/h becoming west after midnight. Winds could gust as high as 32 km/h. Chance of precipitation is 30%.
Thursday
A 20 percent chance of snow. Partly sunny, with a high near -1. West wind 16 to 21 km/h, with gusts as high as 35 km/h.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Postville IA
 43.08°N 91.56°W
Last Update:
3:16 pm CST Dec 11, 2025
Forecast Valid:
4pm CST Dec 11, 2025-6pm CST Dec 18, 2025
 
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Additional Resources

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation