National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

Fair

57°F

14°C

Humidity 67%
Wind Speed S 3 mph
Barometer 29.86 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 21 Mar 4:35 am CDT
Extended Forecast for

4 Miles S Arthur IA

Red Flag Warning March 21, 01:00pm until March 21, 10:00pm
Click here for hazard details and duration
Red Flag Warning

  • Today

    Today: Sunny, with a high near 88. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 43. Breezy, with a west wind 10 to 15 mph becoming north northeast 15 to 20 mph after midnight. Winds could gust as high as 35 mph.

    Low: 43 °F

    Mostly Clear
    then Partly
    Cloudy and
    Breezy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 53. Breezy, with a north wind around 20 mph, with gusts as high as 30 mph.

    High: 53 °F

    Decreasing
    Clouds and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 29. Northeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 29 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, with a high near 55. East wind 5 to 10 mph becoming south southeast in the afternoon.

    High: 55 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 38. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 70.

    High: 70 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 88. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 43. Breezy, with a west wind 10 to 15 mph becoming north northeast 15 to 20 mph after midnight. Winds could gust as high as 35 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 53. Breezy, with a north wind around 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 29. Northeast wind 5 to 15 mph, with gusts as high as 20 mph.
Monday
Partly sunny, with a high near 55. East wind 5 to 10 mph becoming south southeast in the afternoon.
Monday Night
Mostly cloudy, with a low around 38. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, with a high near 63.
Tuesday Night
Mostly cloudy, with a low around 42.
Wednesday
Mostly cloudy, with a high near 70.
Wednesday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 46.
Thursday
Mostly sunny, with a high near 63. Breezy.
Thursday Night
Mostly cloudy, with a low around 29.
Friday
Mostly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Arthur IA
 42.29°N 95.35°W (Elev. 1460 ft)
Last Update:
1:32 am CDT Mar 21, 2026
Forecast Valid:
4am CDT Mar 21, 2026-6pm CDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation