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

72°F

22°C

Humidity 27%
Wind Speed NW 15 mph
Barometer 29.79 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 3 May 5:15 pm CDT
Extended Forecast for

Denison IA

  • Tonight

    Tonight: Mostly clear, with a low around 47. Northwest wind 5 to 8 mph becoming calm.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers between 4pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Sunny, with a high near 77. South southwest wind 6 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 20%.

    High: 77 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms, then a chance of showers after 10pm. Increasing clouds, with a low around 43. North wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    Low: 43 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 10 percent chance of showers before 7am. Mostly cloudy, with a high near 58. North northeast wind 5 to 11 mph, with gusts as high as 18 mph.

    High: 58 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36. North northwest wind 5 to 9 mph becoming calm in the evening.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 47. Northwest wind 5 to 8 mph becoming calm.
Monday
A slight chance of showers between 4pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Sunny, with a high near 77. South southwest wind 6 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 20%.
Monday Night
A slight chance of showers and thunderstorms, then a chance of showers after 10pm. Increasing clouds, with a low around 43. North wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Tuesday
A 10 percent chance of showers before 7am. Mostly cloudy, with a high near 58. North northeast wind 5 to 11 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly cloudy, with a low around 36. North northwest wind 5 to 9 mph becoming calm in the evening.
Wednesday
Mostly cloudy, with a high near 58.
Wednesday Night
Mostly cloudy, with a low around 38.
Thursday
Mostly sunny, with a high near 66.
Thursday Night
Partly cloudy, with a low around 41.
Friday
Mostly sunny, with a high near 68.
Friday Night
Mostly clear, with a low around 43.
Saturday
Sunny, with a high near 75.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 50.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 71.
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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:
2:32 pm CDT May 3, 2026
Forecast Valid:
5pm CDT May 3, 2026-6pm CDT May 10, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation