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

54°F

12°C

Humidity 94%
Wind Speed Vrbl 5 mph
Barometer 30.14 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 14 Oct 7:55 pm CDT
Extended Forecast for

Calmar IA

  • Tonight

    Tonight: A 20 percent chance of showers after 4am. Cloudy, with a steady temperature around 52. East wind 5 to 8 mph.

    Low: 52 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Showers, mainly after 10am. High near 57. East wind 5 to 8 mph becoming north in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 57 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely, mainly before 11pm. Mostly cloudy, with a low around 43. Breezy, with a northwest wind 14 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Showers
    Likely then
    Mostly Cloudy
    and Breezy

  • Friday

    Friday: A 40 percent chance of showers before 1pm. Partly sunny, with a high near 52. Breezy, with a northwest wind 18 to 25 mph, with gusts as high as 38 mph.

    High: 52 °F

    Chance
    Showers and
    Breezy

  • Friday Night

    Friday Night: Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 31. North wind 5 to 10 mph becoming light and variable in the evening.

    Low: 31 °F

    Mostly Clear
    then Frost

  • Saturday

    Saturday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 56. Light southwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 24 mph.

    High: 56 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 42. South wind 9 to 13 mph, with gusts as high as 22 mph.

    Low: 42 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 63. Breezy, with a south wind 15 to 20 mph.

    High: 63 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45. South wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers after 4am. Cloudy, with a steady temperature around 52. East wind 5 to 8 mph.
Thursday
Showers, mainly after 10am. High near 57. East wind 5 to 8 mph becoming north in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
Showers likely, mainly before 11pm. Mostly cloudy, with a low around 43. Breezy, with a northwest wind 14 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 40 percent chance of showers before 1pm. Partly sunny, with a high near 52. Breezy, with a northwest wind 18 to 25 mph, with gusts as high as 38 mph.
Friday Night
Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 31. North wind 5 to 10 mph becoming light and variable in the evening.
Saturday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 56. Light southwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 24 mph.
Saturday Night
Clear, with a low around 42. South wind 9 to 13 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 63. Breezy, with a south wind 15 to 20 mph.
Sunday Night
Partly cloudy, with a low around 45. South wind 6 to 11 mph, with gusts as high as 21 mph.
Monday
Mostly sunny, with a high near 66. South wind 3 to 5 mph.
Monday Night
Partly cloudy, with a low around 46. Calm wind.
Tuesday
Sunny, with a high near 68. Calm wind becoming south 5 to 9 mph in the morning.
Tuesday Night
Mostly clear, with a low around 50. South wind around 7 mph.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 70. South wind 7 to 13 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:
6:46 pm CDT Oct 14, 2026
Forecast Valid:
8pm CDT Oct 14, 2026-6pm CDT Oct 21, 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