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

36°F

2°C

Humidity 100%
Wind Speed S 8 mph
Barometer 29.72 in
Dewpoint 36°F (2°C)
Visibility 8.00 mi
Wind Chill30°F (-1°C)
Last update 7 Jan 6:15 pm CST
Extended Forecast for

Calmar IA

  • Tonight

    Tonight: Increasing clouds, with a steady temperature around 35. South wind 6 to 8 mph.

    Low: 35 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Rain, mainly after 1pm. Patchy fog between 7am and 9am. High near 41. South wind 5 to 9 mph becoming northeast in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 41 °F

    Patchy Fog
    then Rain

  • Thursday Night

    Thursday Night: Rain, possibly mixed with snow before 3am, then rain likely between 3am and 5am, then snow likely after 5am. Low around 32. Northwest wind 10 to 14 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 32 °F

    Rain then
    Rain/Snow
    Likely

  • Friday

    Friday: A slight chance of rain and snow before 9am, then a slight chance of snow between 9am and noon. Partly sunny, with a high near 36. North wind 7 to 14 mph. Chance of precipitation is 20%.

    High: 36 °F

    Slight Chance
    Rain/Snow
    then Partly
    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 25. North wind 6 to 8 mph.

    Low: 25 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: A 50 percent chance of snow. Mostly cloudy, with a high near 28. Blustery, with a northwest wind 9 to 18 mph. New snow accumulation of less than one inch possible.

    High: 28 °F

    Chance Snow
    and Blustery

  • Saturday Night

    Saturday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 14. Blustery, with a northwest wind 15 to 18 mph.

    Low: 14 °F

    Blustery.
    Chance Snow
    then Mostly
    Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 24. Northwest wind 8 to 14 mph.

    High: 24 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 18. Southwest wind 8 to 10 mph.

    Low: 18 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a steady temperature around 35. South wind 6 to 8 mph.
Thursday
Rain, mainly after 1pm. Patchy fog between 7am and 9am. High near 41. South wind 5 to 9 mph becoming northeast in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain, possibly mixed with snow before 3am, then rain likely between 3am and 5am, then snow likely after 5am. Low around 32. Northwest wind 10 to 14 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Friday
A slight chance of rain and snow before 9am, then a slight chance of snow between 9am and noon. Partly sunny, with a high near 36. North wind 7 to 14 mph. Chance of precipitation is 20%.
Friday Night
A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 25. North wind 6 to 8 mph.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 28. Blustery, with a northwest wind 9 to 18 mph. New snow accumulation of less than one inch possible.
Saturday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 14. Blustery, with a northwest wind 15 to 18 mph.
Sunday
Mostly sunny, with a high near 24. Northwest wind 8 to 14 mph.
Sunday Night
Partly cloudy, with a low around 18. Southwest wind 8 to 10 mph.
Monday
Mostly sunny, with a high near 37. West wind around 11 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 29. West wind around 10 mph.
Tuesday
Mostly cloudy, with a high near 37. West wind around 10 mph.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. Northwest wind around 10 mph. Chance of precipitation is 30%.
Wednesday
Mostly cloudy, with a high near 30. Northwest wind 10 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:
5:16 pm CST Jan 7, 2026
Forecast Valid:
6pm CST Jan 7, 2026-6pm CST Jan 14, 2026
 
Forecast Discussion
 
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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