Heavy to Excessive Rains in The Four Corners Region and Midwest; Heat Persists in the South-Central U.S.

Repeated rounds of showers and thunderstorms could bring a flash flooding threat across the Four Corners region and from the mid-Mississippi Valley into the lower Great Lakes. Hot temperatures and high humidity will continue to challenge daily records from the Southern Plains to the lower Mississippi Valley. Read More >

Current conditions at

Decorah (KDEH)

Lat: 43.28°NLon: 91.73°WElev: 1158ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Calmar IA

  • Today

    Today: Partly sunny, with a high near 71. East wind 3 to 7 mph.

    High: 71 °F

    Partly Sunny

  • Tonight

    Tonight: A 50 percent chance of showers, mainly after 1am.  Mostly cloudy, with a low around 60. Light east wind.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 60 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers before 9am.  Mostly cloudy, with a high near 74. Calm wind.

    High: 74 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 1am.  Increasing clouds, with a low around 60. Calm wind becoming east around 5 mph after midnight.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 60 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm.  High near 70. Southeast wind 7 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 70 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall.  Low around 62. Breezy, with a southeast wind 11 to 16 mph.  Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.

    Low: 62 °F

    Heavy Rain
    and Breezy

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 72. South wind around 9 mph becoming north in the morning.

    High: 72 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am.  Mostly cloudy, with a low around 57. Northeast wind 8 to 10 mph.

    Low: 57 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 1pm.  Mostly cloudy, with a high near 66. Northeast wind around 11 mph.  Chance of precipitation is 50%.

    High: 66 °F

    Chance
    Showers

Detailed Forecast

Today
Partly sunny, with a high near 71. East wind 3 to 7 mph.
Tonight
A 50 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 60. Light east wind. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A 20 percent chance of showers before 9am. Mostly cloudy, with a high near 74. Calm wind.
Thursday Night
A 40 percent chance of showers after 1am. Increasing clouds, with a low around 60. Calm wind becoming east around 5 mph after midnight. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers and possibly a thunderstorm. High near 70. Southeast wind 7 to 14 mph, with gusts as high as 22 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. Some of the storms could produce heavy rainfall. Low around 62. Breezy, with a southeast wind 11 to 16 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 72. South wind around 9 mph becoming north in the morning.
Saturday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 57. Northeast wind 8 to 10 mph.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 66. Northeast wind around 11 mph. Chance of precipitation is 50%.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Northeast wind 7 to 9 mph.
Monday
A 40 percent chance of showers. Mostly cloudy, with a high near 66. Northeast wind around 8 mph.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 53. Northeast wind around 5 mph.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 69. East wind 3 to 5 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Calmar IA
 43.17°N 91.86°W
9:22 am CDT Sep 16, 2026
9am CDT Sep 16, 2026-6pm CDT Sep 22, 2026
 
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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