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

81°F

27°C

Humidity 70%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 5 Jul 6:15 pm CDT
Extended Forecast for

Calmar IA

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 8pm. Patchy fog after 5am. Otherwise, mostly clear, with a low around 63. East wind 3 to 5 mph. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Patchy Fog

  • Monday

    Monday: Areas of fog before 9am. Otherwise, sunny, with a high near 82. Calm wind becoming east around 5 mph.

    High: 82 °F

    Areas Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. Light southeast wind.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 85 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 64. South wind around 6 mph.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. Southwest wind 7 to 13 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Southwest wind 6 to 9 mph becoming northwest after midnight. Chance of precipitation is 70%.

    Low: 66 °F

    Showers
    Likely

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 79. North wind around 7 mph.

    High: 79 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 62. Northeast wind 5 to 7 mph.

    Low: 62 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 8pm. Patchy fog after 5am. Otherwise, mostly clear, with a low around 63. East wind 3 to 5 mph. Chance of precipitation is 20%.
Monday
Areas of fog before 9am. Otherwise, sunny, with a high near 82. Calm wind becoming east around 5 mph.
Monday Night
Mostly clear, with a low around 61. Light southeast wind.
Tuesday
Mostly sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 64. South wind around 6 mph.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. Southwest wind 7 to 13 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Southwest wind 6 to 9 mph becoming northwest after midnight. Chance of precipitation is 70%.
Thursday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 79. North wind around 7 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 62. Northeast wind 5 to 7 mph.
Friday
Partly sunny, with a high near 79. East wind around 6 mph.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61. East wind around 5 mph becoming light and variable in the evening.
Saturday
Mostly sunny, with a high near 81. South wind 3 to 6 mph.
Saturday Night
Partly cloudy, with a low around 63. Southwest wind around 6 mph.
Sunday
Mostly sunny, with a high near 84. Southwest wind 6 to 10 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:
6:07 pm CDT Jul 5, 2026
Forecast Valid:
6pm CDT Jul 5, 2026-6pm CDT Jul 12, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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