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

82°F

28°C

Humidity 48%
Wind Speed Calm
Barometer 29.98 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 2 Aug 1:15 pm CDT
Extended Forecast for

Denison IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 85. Calm wind becoming east southeast around 5 mph.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 61. East southeast wind 3 to 5 mph.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 87. South wind 6 to 14 mph, with gusts as high as 23 mph.

    High: 87 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 66. South wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 22 mph.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Light and variable wind becoming north 5 to 7 mph in the morning. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 57. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 57 °F

    Showers

  • Wednesday

    Wednesday: Showers likely. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.

    High: 75 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 55.

    Low: 55 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 85. Calm wind becoming east southeast around 5 mph.
Tonight
Partly cloudy, with a low around 61. East southeast wind 3 to 5 mph.
Monday
Mostly sunny, with a high near 87. South wind 6 to 14 mph, with gusts as high as 23 mph.
Monday Night
Partly cloudy, with a low around 66. South wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 22 mph.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Light and variable wind becoming north 5 to 7 mph in the morning. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and possibly a thunderstorm. Low around 57. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
Showers likely. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
Wednesday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 55.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
Mostly clear, with a low around 59.
Friday
Mostly sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 64.
Saturday
Mostly sunny, with a high near 87.
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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:
1:26 pm CDT Aug 2, 2026
Forecast Valid:
1pm CDT Aug 2, 2026-6pm CDT Aug 8, 2026
 
Forecast Discussion
 
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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