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Damaging Winds and Flooding on August 9, 2025

Detailed information on the damaging winds and flooding that occurred during the early morning hours of August 9th and 10th, 2025. Read More >

Hazardous Weather Conditions

Current conditions at

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

Fog/Mist

68°F

20°C

Humidity 100%
Wind Speed Calm
Barometer 30.14 in
Dewpoint 68°F (20°C)
Visibility 2.00 mi
Last update 20 Aug 2:35 am CDT
Extended Forecast for

2 Miles ENE Castana IA

  • Overnight

    Overnight: Patchy fog after 5am. Otherwise, mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Patchy Fog

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms between 1pm and 4pm. Patchy fog before 9am. Otherwise, sunny, with a high near 85. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 85 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 64. East northeast wind around 6 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Clear
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 84. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 84 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64. Southeast wind 3 to 5 mph.

    Low: 64 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 82. Light and variable wind becoming west northwest around 6 mph in the morning. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 58. North wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 58 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 77. Calm wind becoming north northwest 5 to 9 mph in the morning. Winds could gust as high as 17 mph.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 51. North northwest wind around 6 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 66. Calm wind.
Wednesday
A slight chance of showers and thunderstorms between 1pm and 4pm. Patchy fog before 9am. Otherwise, sunny, with a high near 85. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 20%.
Wednesday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 64. East northeast wind around 6 mph becoming calm in the evening.
Thursday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 84. Calm wind becoming south southeast around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 64. Southeast wind 3 to 5 mph.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 82. Light and variable wind becoming west northwest around 6 mph in the morning. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 58. North wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 77. Calm wind becoming north northwest 5 to 9 mph in the morning. Winds could gust as high as 17 mph.
Saturday Night
Mostly clear, with a low around 51. North northwest wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 72. Calm wind becoming north northwest 5 to 9 mph in the morning. Winds could gust as high as 17 mph.
Sunday Night
Mostly clear, with a low around 46. North wind around 6 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 71. Calm wind becoming north northwest around 6 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 47. Light and variable wind.
Tuesday
Partly sunny, with a high near 73. Calm wind becoming south around 6 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Castana IA
 42.09°N 95.88°W (Elev. 1119 ft)
Last Update:
2:45 am CDT Aug 20, 2025
Forecast Valid:
2am CDT Aug 20, 2025-6pm CDT Aug 26, 2025
 
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