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.

Fair

25°F

-4°C

Humidity 100%
Wind Speed Calm
Barometer 30.40 in
Dewpoint 25°F (-4°C)
Visibility 7.00 mi
Last update 15 Nov 6:35 am CST
Extended Forecast for

Calmar IA

  • Today

    Today: Sunny, with a high near 47. Light and variable wind.

    High: 47 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 30. Calm wind becoming south around 6 mph after midnight.

    Low: 30 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 50. South wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 50 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36. South wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 54. South wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 54 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41. Breezy, with a south wind 14 to 16 mph, with gusts as high as 25 mph.

    Low: 41 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 56. Breezy, with a south wind 16 to 22 mph.

    High: 56 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 46. Breezy, with a south wind 13 to 20 mph, with gusts as high as 28 mph.

    Low: 46 °F

    Partly Cloudy
    and Breezy
    then Slight
    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 56. West wind 5 to 13 mph, with gusts as high as 21 mph.

    High: 56 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 47. Light and variable wind.
Tonight
Mostly clear, with a low around 30. Calm wind becoming south around 6 mph after midnight.
Monday
Sunny, with a high near 50. South wind 6 to 11 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 36. South wind 9 to 11 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 54. South wind 10 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
Partly cloudy, with a low around 41. Breezy, with a south wind 14 to 16 mph, with gusts as high as 25 mph.
Wednesday
Mostly sunny, with a high near 56. Breezy, with a south wind 16 to 22 mph.
Wednesday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 46. Breezy, with a south wind 13 to 20 mph, with gusts as high as 28 mph.
Thursday
Mostly sunny, with a high near 56. West wind 5 to 13 mph, with gusts as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 39. Calm wind.
Friday
A 30 percent chance of rain. Partly sunny, with a high near 58. Light southeast wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 21 mph.
Friday Night
Rain. Low around 49. Breezy, with a south wind 11 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Saturday
Rain. High near 58. Breezy, with a south wind around 18 mph becoming west in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 80%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Calmar IA
 43.17°N 91.86°W
Last Update:
6:25 am CST Nov 15, 2026
Forecast Valid:
6am CST Nov 15, 2026-6pm CST Nov 21, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation