National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

Partly Cloudy

48°F

9°C

Humidity 100%
Wind Speed Calm
Barometer 29.92 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 13 Oct 6:35 am CDT
Extended Forecast for

Defiance IA

  • Today

    Today: Mostly sunny, with a high near 67. North northeast wind 3 to 6 mph.

    High: 67 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers between 8pm and 9pm. Mostly cloudy, with a low around 48. North northeast wind 5 to 7 mph. Chance of precipitation is 20%.

    Low: 48 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Increasing clouds, with a high near 64. North northeast wind around 9 mph.

    High: 64 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers after 1am. Cloudy, with a low around 50. East northeast wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Cloudy then
    Chance
    Showers

  • Thursday

    Thursday: Showers. High near 61. Northeast wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 61 °F

    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 41. North northwest wind 11 to 14 mph, with gusts as high as 24 mph.

    Low: 41 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 56. North northwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 56 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 33. Calm wind.

    Low: 33 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 60. Light south wind becoming south southwest 9 to 14 mph in the morning. Winds could gust as high as 22 mph.

    High: 60 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 67. North northeast wind 3 to 6 mph.
Tonight
A slight chance of showers between 8pm and 9pm. Mostly cloudy, with a low around 48. North northeast wind 5 to 7 mph. Chance of precipitation is 20%.
Wednesday
Increasing clouds, with a high near 64. North northeast wind around 9 mph.
Wednesday Night
A 50 percent chance of showers after 1am. Cloudy, with a low around 50. East northeast wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Showers. High near 61. Northeast wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Partly cloudy, with a low around 41. North northwest wind 11 to 14 mph, with gusts as high as 24 mph.
Friday
Sunny, with a high near 56. North northwest wind 10 to 16 mph, with gusts as high as 25 mph.
Friday Night
Clear, with a low around 33. Calm wind.
Saturday
Sunny, with a high near 60. Light south wind becoming south southwest 9 to 14 mph in the morning. Winds could gust as high as 22 mph.
Saturday Night
Clear, with a low around 41. South wind around 11 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 67. South southwest wind 11 to 14 mph, with gusts as high as 24 mph.
Sunday Night
Partly cloudy, with a low around 47. South wind 3 to 7 mph. Winds could gust as high as 17 mph.
Monday
Mostly sunny, with a high near 69. Calm wind becoming south around 6 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Defiance IA
 41.83°N 95.35°W (Elev. 1293 ft)
Last Update:
6:41 am CDT Oct 13, 2026
Forecast Valid:
7am CDT Oct 13, 2026-6pm CDT Oct 19, 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