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

64°F

18°C

Humidity 28%
Wind Speed SW 10 G 17 mph
Barometer 30.05 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 2 May 3:35 pm CDT
Extended Forecast for

Denison IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 64. West wind around 8 mph.

    High: 64 °F

    Sunny

  • Tonight

    Tonight: Mostly clear during the evening, then mostly cloudy overnight, with a low around 45. South wind 8 to 11 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 69. West wind 7 to 11 mph becoming north northwest in the morning. Winds could gust as high as 18 mph.

    High: 69 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45. West northwest wind around 6 mph becoming calm.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 77. South southwest wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 77 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 44. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 44 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers before 1pm. Cloudy, with a high near 58.

    High: 58 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 57.

    High: 57 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 64. West wind around 8 mph.
Tonight
Mostly clear during the evening, then mostly cloudy overnight, with a low around 45. South wind 8 to 11 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 69. West wind 7 to 11 mph becoming north northwest in the morning. Winds could gust as high as 18 mph.
Sunday Night
Mostly clear, with a low around 45. West northwest wind around 6 mph becoming calm.
Monday
A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 77. South southwest wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 44. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A 20 percent chance of showers before 1pm. Cloudy, with a high near 58.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Mostly cloudy, with a high near 57.
Wednesday Night
Mostly cloudy, with a low around 36.
Thursday
Mostly sunny, with a high near 65.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Mostly sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Denison IA
 42°N 95.35°W
Last Update:
2:31 pm CDT May 2, 2026
Forecast Valid:
3pm CDT May 2, 2026-6pm CDT May 8, 2026
 
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Additional Resources

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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