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

70°F

21°C

Humidity 73%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 26 Aug 8:35 pm CDT
Extended Forecast for

Calmar IA

  • Tonight

    Tonight: Mostly clear, with a low around 59. Northwest wind 3 to 6 mph.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 79. Northwest wind 3 to 7 mph.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 64. Calm wind becoming south 5 to 8 mph in the evening.

    Low: 64 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 79. Breezy, with a south wind 10 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Breezy, with a south wind around 17 mph, with gusts as high as 26 mph.

    Low: 68 °F

    Chance
    T-storms and
    Breezy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 86. Breezy, with a south wind 14 to 16 mph, with gusts as high as 25 mph.

    High: 86 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South wind 11 to 15 mph.

    Low: 70 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 59. Northwest wind 3 to 6 mph.
Thursday
Sunny, with a high near 79. Northwest wind 3 to 7 mph.
Thursday Night
Mostly clear, with a low around 55. Calm wind.
Friday
Sunny, with a high near 80. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 64. Calm wind becoming south 5 to 8 mph in the evening.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 79. Breezy, with a south wind 10 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Breezy, with a south wind around 17 mph, with gusts as high as 26 mph.
Sunday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 86. Breezy, with a south wind 14 to 16 mph, with gusts as high as 25 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South wind 11 to 15 mph.
Monday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87. Southwest wind around 10 mph, with gusts as high as 18 mph.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66. South wind around 5 mph becoming calm after midnight.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 85. Light west wind.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Light and variable wind.
Wednesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. South wind 3 to 7 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Calmar IA
 43.17°N 91.86°W
Last Update:
5:47 pm CDT Aug 26, 2026
Forecast Valid:
8pm CDT Aug 26, 2026-6pm CDT Sep 2, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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