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.

Fair

54°F

12°C

Humidity 63%
Wind Speed E 5 mph
Barometer 29.87 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 29 Mar 9:35 pm CDT
Extended Forecast for

Denison IA

  • Tonight

    Tonight: Mostly clear, with a low around 45. South southeast wind 5 to 7 mph becoming calm after midnight.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 84. Light south southeast wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 84 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: A chance of rain and thunderstorms before 10pm, then a chance of rain between 10pm and 1am, then a slight chance of rain and thunderstorms after 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 49. South wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.

    Low: 49 °F

    Chance Rain

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly after 1pm. Mostly cloudy, with a high near 63. Windy, with a west wind 17 to 23 mph becoming north in the afternoon. Winds could gust as high as 33 mph.

    High: 63 °F

    Chance Rain
    and Windy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31. Blustery, with a north northeast wind 9 to 17 mph, with gusts as high as 28 mph.

    Low: 31 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: A chance of snow showers before 1pm, then rain likely, possibly mixed with snow showers. Cloudy, with a high near 44. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 44 °F

    Chance Snow
    Showers then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Rain and snow. Low around 31. Chance of precipitation is 80%.

    Low: 31 °F

    Rain/Snow

  • Thursday

    Thursday: Rain and snow likely before 1pm, then a chance of rain. Mostly cloudy, with a high near 46. Chance of precipitation is 60%.

    High: 46 °F

    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 45. South southeast wind 5 to 7 mph becoming calm after midnight.
Monday
Increasing clouds, with a high near 84. Light south southeast wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Monday Night
A chance of rain and thunderstorms before 10pm, then a chance of rain between 10pm and 1am, then a slight chance of rain and thunderstorms after 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 49. South wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Tuesday
A 30 percent chance of rain, mainly after 1pm. Mostly cloudy, with a high near 63. Windy, with a west wind 17 to 23 mph becoming north in the afternoon. Winds could gust as high as 33 mph.
Tuesday Night
Mostly cloudy, with a low around 31. Blustery, with a north northeast wind 9 to 17 mph, with gusts as high as 28 mph.
Wednesday
A chance of snow showers before 1pm, then rain likely, possibly mixed with snow showers. Cloudy, with a high near 44. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain and snow. Low around 31. Chance of precipitation is 80%.
Thursday
Rain and snow likely before 1pm, then a chance of rain. Mostly cloudy, with a high near 46. Chance of precipitation is 60%.
Thursday Night
Mostly cloudy, with a low around 32.
Friday
A 50 percent chance of rain. Mostly cloudy, with a high near 58.
Friday Night
Rain likely. Mostly cloudy, with a low around 39. Chance of precipitation is 70%.
Saturday
Rain likely. Mostly cloudy, with a high near 52. Windy. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of rain. Partly cloudy, with a low around 29. Blustery.
Sunday
Mostly sunny, with a high near 49. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Denison IA
 42.03°N 95.35°W
Last Update:
6:12 pm CDT Mar 29, 2026
Forecast Valid:
9pm CDT Mar 29, 2026-6pm CDT Apr 5, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation