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

90°F

32°C

Humidity 43%
Wind Speed S 13 G 21 mph
Barometer 29.61 in
Dewpoint 64°F (18°C)
Visibility NA
Heat Index92°F (33°C)
Last update 15 May 4:35 pm CDT
Extended Forecast for

5 Miles NNW Arion IA

  • This Afternoon

    This Afternoon: A 10 percent chance of showers and thunderstorms after 5pm. Sunny, with a high near 91. South wind around 13 mph.

    High: 91 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before midnight. Some of the storms could be severe. Mostly cloudy, with a low around 54. South wind 5 to 10 mph becoming light and variable. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Severe
    Thunderstorms

  • Saturday

    Saturday: A slight chance of showers between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 84. Northeast wind 5 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and thunderstorms, mainly after midnight. Some of the storms could produce heavy rainfall. Low around 57. East wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 57 °F

    Chance
    T-storms then
    Heavy Rain

  • Sunday

    Sunday: A slight chance of showers and thunderstorms before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 87. Windy, with a south southeast wind 13 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Chance
    T-storms and
    Windy

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 59. Breezy. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 59 °F

    Showers and
    Breezy

  • Monday

    Monday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 83. Breezy. Chance of precipitation is 80%.

    High: 83 °F

    Breezy.
    Chance
    T-storms then
    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 46. Breezy. Chance of precipitation is 60%.

    Low: 46 °F

    Showers
    Likely and
    Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 62. Breezy.

    High: 62 °F

    Partly Sunny
    and Breezy

Detailed Forecast

This Afternoon
A 10 percent chance of showers and thunderstorms after 5pm. Sunny, with a high near 91. South wind around 13 mph.
Tonight
Showers and thunderstorms likely, mainly before midnight. Some of the storms could be severe. Mostly cloudy, with a low around 54. South wind 5 to 10 mph becoming light and variable. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A slight chance of showers between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 84. Northeast wind 5 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms, mainly after midnight. Some of the storms could produce heavy rainfall. Low around 57. East wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A slight chance of showers and thunderstorms before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 87. Windy, with a south southeast wind 13 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and possibly a thunderstorm. Low around 59. Breezy. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 83. Breezy. Chance of precipitation is 80%.
Monday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 46. Breezy. Chance of precipitation is 60%.
Tuesday
Partly sunny, with a high near 62. Breezy.
Tuesday Night
Partly cloudy, with a low around 40.
Wednesday
Mostly sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Partly sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNW Arion IA
 42°N 95.5°W
Last Update:
3:22 pm CDT May 15, 2026
Forecast Valid:
4pm CDT May 15, 2026-6pm CDT May 21, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation