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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update 12 Jan 8:35 am CST
Extended Forecast for

Calmar IA

  • Today

    Today: Sunny, with a high near 41. West wind 7 to 9 mph.

    High: 41 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a steady temperature around 35. Southwest wind 7 to 14 mph, with gusts as high as 22 mph.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 43. Breezy, with a west wind 14 to 16 mph, with gusts as high as 25 mph.

    High: 43 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 20. Blustery, with a northwest wind 15 to 21 mph, with gusts as high as 29 mph.

    Low: 20 °F

    Mostly Cloudy
    and Blustery

  • Wednesday

    Wednesday: Mostly sunny, with a high near 24. Blustery, with a north wind 18 to 23 mph, with gusts as high as 31 mph.

    High: 24 °F

    Mostly Sunny
    and Blustery

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 9. Blustery, with a north wind 12 to 17 mph decreasing to 5 to 10 mph after midnight.

    Low: 9 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Thursday

    Thursday: A 30 percent chance of snow after noon. Partly sunny, with a high near 26. Northwest wind 5 to 11 mph becoming south in the afternoon.

    High: 26 °F

    Mostly Sunny
    then Chance
    Snow

  • Thursday Night

    Thursday Night: Snow likely. Cloudy, with a low around 22. South wind 11 to 13 mph becoming west after midnight. Chance of precipitation is 60%.

    Low: 22 °F

    Snow Likely

  • Friday

    Friday: Snow likely. Mostly cloudy, with a high near 29. Blustery, with a northwest wind 13 to 17 mph. Chance of precipitation is 70%.

    High: 29 °F

    Snow Likely
    and Blustery

Detailed Forecast

Today
Sunny, with a high near 41. West wind 7 to 9 mph.
Tonight
Mostly cloudy, with a steady temperature around 35. Southwest wind 7 to 14 mph, with gusts as high as 22 mph.
Tuesday
Partly sunny, with a high near 43. Breezy, with a west wind 14 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly cloudy, with a low around 20. Blustery, with a northwest wind 15 to 21 mph, with gusts as high as 29 mph.
Wednesday
Mostly sunny, with a high near 24. Blustery, with a north wind 18 to 23 mph, with gusts as high as 31 mph.
Wednesday Night
Mostly clear, with a low around 9. Blustery, with a north wind 12 to 17 mph decreasing to 5 to 10 mph after midnight.
Thursday
A 30 percent chance of snow after noon. Partly sunny, with a high near 26. Northwest wind 5 to 11 mph becoming south in the afternoon.
Thursday Night
Snow likely. Cloudy, with a low around 22. South wind 11 to 13 mph becoming west after midnight. Chance of precipitation is 60%.
Friday
Snow likely. Mostly cloudy, with a high near 29. Blustery, with a northwest wind 13 to 17 mph. Chance of precipitation is 70%.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 8. Blustery, with a northwest wind 14 to 17 mph.
Saturday
A 20 percent chance of snow. Partly sunny, with a high near 11. Blustery, with a northwest wind 14 to 16 mph.
Saturday Night
Mostly cloudy, with a low around 0. Northwest wind around 14 mph.
Sunday
Partly sunny, with a high near 16. West wind around 14 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Calmar IA
 43.17°N 91.86°W
Last Update:
6:51 am CST Jan 12, 2026
Forecast Valid:
8am CST Jan 12, 2026-6pm CST Jan 18, 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