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.

Fog/Mist

36°F

2°C

Humidity 100%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 36°F (2°C)
Visibility 5.00 mi
Last update 4 Mar 9:55 pm CST
Extended Forecast for

Calmar IA

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 36. Northeast wind 3 to 5 mph.

    Low: 36 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 51. Northeast wind 5 to 7 mph becoming southeast in the afternoon.

    High: 51 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm, mainly after 3am. Mostly cloudy, with a low around 41. Southeast wind 6 to 11 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 41 °F

    Mostly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 63. South wind 11 to 14 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 63 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before midnight, then showers likely. Low around 33. Breezy, with a south wind 11 to 16 mph becoming northwest after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 33 °F

    Showers then
    Showers
    Likely and
    Breezy

  • Saturday

    Saturday: Mostly sunny, with a high near 45. Northwest wind 8 to 15 mph.

    High: 45 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 33. Southwest wind 7 to 15 mph.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 57. Breezy, with a southwest wind 14 to 17 mph.

    High: 57 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42. Southwest wind 11 to 13 mph.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 36. Northeast wind 3 to 5 mph.
Thursday
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 51. Northeast wind 5 to 7 mph becoming southeast in the afternoon.
Thursday Night
Showers likely and possibly a thunderstorm, mainly after 3am. Mostly cloudy, with a low around 41. Southeast wind 6 to 11 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm. High near 63. South wind 11 to 14 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Friday Night
Showers and possibly a thunderstorm before midnight, then showers likely. Low around 33. Breezy, with a south wind 11 to 16 mph becoming northwest after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Mostly sunny, with a high near 45. Northwest wind 8 to 15 mph.
Saturday Night
Mostly clear, with a low around 33. Southwest wind 7 to 15 mph.
Sunday
Sunny, with a high near 57. Breezy, with a southwest wind 14 to 17 mph.
Sunday Night
Mostly clear, with a low around 42. Southwest wind 11 to 13 mph.
Monday
Sunny, with a high near 66. Southwest wind 11 to 15 mph.
Monday Night
A 20 percent chance of showers. Mostly clear, with a low around 40. West wind 11 to 13 mph becoming east after midnight.
Tuesday
Showers likely. Partly sunny, with a high near 54. Breezy, with an east wind 13 to 16 mph becoming south in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Tuesday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 23. Blustery, with a north wind around 16 mph. Chance of precipitation is 50%.
Wednesday
A 30 percent chance of snow showers. Partly sunny, with a high near 33. Breezy, with a north wind 14 to 16 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:
8:36 pm CST Mar 4, 2026
Forecast Valid:
10pm CST Mar 4, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation