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.

Partly Cloudy

59°F

15°C

Humidity 55%
Wind Speed NW 8 mph
Barometer 29.92 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 12 May 9:55 pm CDT
Extended Forecast for

Calmar IA

  • Tonight

    Tonight: Mostly clear, with a low around 46. Northwest wind 11 to 14 mph, with gusts as high as 24 mph.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 68. Breezy, with a north wind 13 to 17 mph, with gusts as high as 26 mph.

    High: 68 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Clear, with a low around 42. North wind 5 to 9 mph becoming light and variable.

    Low: 42 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 73. Breezy, with a south wind 7 to 17 mph.

    High: 73 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 54. Breezy, with a south wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Showers
    Likely and
    Breezy

  • Friday

    Friday: Sunny, with a high near 83. South wind 11 to 13 mph becoming west in the afternoon. Winds could gust as high as 21 mph.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 54. West wind 5 to 9 mph.

    Low: 54 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm. Sunny, with a high near 82. West wind 5 to 7 mph becoming south in the afternoon.

    High: 82 °F

    Sunny then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Southeast wind 5 to 10 mph.

    Low: 55 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 46. Northwest wind 11 to 14 mph, with gusts as high as 24 mph.
Wednesday
Sunny, with a high near 68. Breezy, with a north wind 13 to 17 mph, with gusts as high as 26 mph.
Wednesday Night
Clear, with a low around 42. North wind 5 to 9 mph becoming light and variable.
Thursday
Sunny, with a high near 73. Breezy, with a south wind 7 to 17 mph.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 54. Breezy, with a south wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Sunny, with a high near 83. South wind 11 to 13 mph becoming west in the afternoon. Winds could gust as high as 21 mph.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 54. West wind 5 to 9 mph.
Saturday
A 20 percent chance of showers after 1pm. Sunny, with a high near 82. West wind 5 to 7 mph becoming south in the afternoon.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Southeast wind 5 to 10 mph.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. Breezy, with a southeast wind 14 to 17 mph, with gusts as high as 25 mph.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. Breezy, with a south wind around 16 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 77. Breezy, with a west wind around 17 mph, with gusts as high as 25 mph.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53. West wind 10 to 13 mph, with gusts as high as 21 mph.
Tuesday
Partly sunny, with a high near 73. North wind around 11 mph.
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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:
9:27 pm CDT May 12, 2026
Forecast Valid:
10pm CDT May 12, 2026-6pm CDT May 19, 2026
 
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Additional Resources

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Chance of Precipitation