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.

Overcast

14°F

-10°C

Humidity 44%
Wind Speed Calm
Barometer 30.26 in
Dewpoint -4°F (-20°C)
Visibility 10.00 mi
Last update 19 Jan 6:55 pm CST
Extended Forecast for

Denison IA

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 3. West wind around 6 mph becoming calm in the evening.

    Low: 3 °F

    Gradual
    Clearing

  • Tuesday

    Tuesday: Increasing clouds, with a high near 26. Wind chill values as low as 5. Calm wind becoming south 5 to 9 mph in the morning.

    High: 26 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 14. Wind chill values as low as 5. South wind 7 to 10 mph becoming northwest after midnight.

    Low: 14 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Wednesday

    Wednesday: Increasing clouds, with a high near 37. Wind chill values as low as 5. Breezy, with a west southwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 37 °F

    Sunny then
    Mostly Cloudy
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 9. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 9 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -8.

    Low: -8 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny and cold, with a high near 1.

    High: 1 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -12.

    Low: -12 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy during the early evening, then gradual clearing, with a low around 3. West wind around 6 mph becoming calm in the evening.
Tuesday
Increasing clouds, with a high near 26. Wind chill values as low as 5. Calm wind becoming south 5 to 9 mph in the morning.
Tuesday Night
A 20 percent chance of snow before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 14. Wind chill values as low as 5. South wind 7 to 10 mph becoming northwest after midnight.
Wednesday
Increasing clouds, with a high near 37. Wind chill values as low as 5. Breezy, with a west southwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 9. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday
Mostly sunny, with a high near 25.
Thursday Night
Mostly cloudy, with a low around -8.
Friday
Partly sunny and cold, with a high near 1.
Friday Night
Mostly cloudy, with a low around -12.
Saturday
Mostly sunny and cold, with a high near 10.
Saturday Night
Partly cloudy, with a low around -4.
Sunday
Mostly sunny, with a high near 18.
Sunday Night
Partly cloudy, with a low around 4.
Monday
Mostly sunny, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Denison IA
 42.03°N 95.35°W
Last Update:
5:56 pm CST Jan 19, 2026
Forecast Valid:
7pm CST Jan 19, 2026-6pm CST Jan 26, 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