Dangerous Surf and Rip Currents for most of the Atlantic Shoreline; Record Heat for the West

Hurricane Erin continues to track northward. Tropical storm force winds, storm surge conditions will increase for the Outer Banks today and portions of coastal Virginia. Life-threatening surf and rip currents along much of the east coast of the U.S. this week. Major to extreme HeatRisk with new record high temperatures are expected for many areas of the western U.S. this week. Read More >

Hazardous Weather Conditions

Current conditions at

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

A Few Clouds

84°F

29°C

Humidity 70%
Wind Speed Vrbl 6 G 13 mph
Barometer 30.13 in
Dewpoint 73°F (23°C)
Visibility 9.00 mi
Heat Index90°F (32°C)
Last update 20 Aug 1:35 pm CDT
Extended Forecast for

Denison IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 84. North northeast wind around 6 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 5am.  Otherwise, mostly clear, with a low around 62. Northeast wind around 6 mph becoming calm  in the evening.

    Low: 62 °F

    Mostly Clear
    then Patchy
    Fog

  • Thursday

    Thursday: Mostly sunny, with a high near 82. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63. East southeast wind 3 to 6 mph.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 83. Calm wind becoming south southwest around 6 mph in the afternoon.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am.  Partly cloudy, with a low around 58. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 84. North northeast wind around 6 mph.
Tonight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 62. Northeast wind around 6 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 82. Calm wind becoming southeast around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 63. East southeast wind 3 to 6 mph.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Calm wind becoming south southwest around 6 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 58. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Sunny, with a high near 71.
Sunday Night
Mostly clear, with a low around 46.
Monday
Sunny, with a high near 70.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Partly sunny, with a high near 73.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Denison IA
 42.03°N 95.35°W
11:50 am CDT Aug 20, 2025
1pm CDT Aug 20, 2025-6pm CDT Aug 26, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database