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

45°F

7°C

Humidity 43%
Wind Speed S 17 G 23 mph
Barometer 29.98 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 29 Mar 5:35 am CDT
Extended Forecast for

Denison IA

  • Today

    Today: Mostly sunny, with a high near 74. Breezy, with a south wind 11 to 16 mph, with gusts as high as 25 mph.

    High: 74 °F

    Mostly Sunny
    and Breezy
    then Mostly
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 45. South wind 3 to 7 mph.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 84. South southeast wind 5 to 14 mph, with gusts as high as 22 mph.

    High: 84 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: A 20 percent chance of showers before 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 45. South wind 7 to 13 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of showers. Mostly cloudy, with a high near 59. Breezy, with a north wind 14 to 18 mph, with gusts as high as 28 mph.

    High: 59 °F

    Chance
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of snow showers before 1pm, then a chance of rain and snow showers. Mostly cloudy, with a high near 47. Chance of precipitation is 30%.

    High: 47 °F

    Slight Chance
    Snow Showers
    then Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: A chance of rain showers before 1am, then rain likely, possibly mixed with snow showers. Mostly cloudy, with a low around 30. Chance of precipitation is 60%.

    Low: 30 °F

    Chance
    Showers then
    Rain/Snow
    Likely

  • Thursday

    Thursday: Rain and snow showers likely before 1pm, then a chance of rain showers. Mostly cloudy, with a high near 45. Breezy. Chance of precipitation is 60%.

    High: 45 °F

    Rain/Snow
    Likely and
    Breezy

Detailed Forecast

Today
Mostly sunny, with a high near 74. Breezy, with a south wind 11 to 16 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 45. South wind 3 to 7 mph.
Monday
Increasing clouds, with a high near 84. South southeast wind 5 to 14 mph, with gusts as high as 22 mph.
Monday Night
A 20 percent chance of showers before 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 45. South wind 7 to 13 mph, with gusts as high as 20 mph.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 59. Breezy, with a north wind 14 to 18 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
A slight chance of snow showers before 1pm, then a chance of rain and snow showers. Mostly cloudy, with a high near 47. Chance of precipitation is 30%.
Wednesday Night
A chance of rain showers before 1am, then rain likely, possibly mixed with snow showers. Mostly cloudy, with a low around 30. Chance of precipitation is 60%.
Thursday
Rain and snow showers likely before 1pm, then a chance of rain showers. Mostly cloudy, with a high near 45. Breezy. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 33.
Friday
Showers likely. Mostly cloudy, with a high near 55. Breezy. Chance of precipitation is 60%.
Friday Night
Showers likely. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.
Saturday
A 40 percent chance of showers. Mostly cloudy, with a high near 51. Windy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Denison IA
 42.03°N 95.35°W
Last Update:
2:43 am CDT Mar 29, 2026
Forecast Valid:
5am CDT Mar 29, 2026-6pm CDT Apr 4, 2026
 
Forecast Discussion
 
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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