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.

A Few Clouds

75°F

24°C

Humidity 69%
Wind Speed S 9 mph
Barometer 29.80 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 20 Jun 4:35 am CDT
Extended Forecast for

2 Miles SW Denison IA

Extreme Heat Warning June 20, 12:00pm until June 22, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Today

    Today: Sunny and hot, with a high near 98. Heat index values as high as 106. Breezy, with a south wind 15 to 18 mph, with gusts as high as 29 mph.

    High: 98 °F

    Hot and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 77. Windy, with a south wind 17 to 21 mph, with gusts as high as 32 mph.

    Low: 77 °F

    Mostly Clear
    and Windy

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Heat index values as high as 107. Windy, with a south southwest wind 18 to 22 mph, with gusts as high as 32 mph.

    High: 100 °F

    Hot and Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. Breezy, with a south wind around 18 mph, with gusts as high as 29 mph.

    Low: 76 °F

    Mostly Clear
    and Breezy

  • Sunday

    Sunday: Sunny and hot, with a high near 97. Windy, with a south wind 18 to 22 mph, with gusts as high as 33 mph.

    High: 97 °F

    Hot and Windy

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. Breezy. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Chance
    T-storms and
    Breezy

  • Monday

    Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 88. Chance of precipitation is 60%.

    High: 88 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 62. Chance of precipitation is 90%.

    Low: 62 °F

    Showers

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 80%.

    High: 81 °F

    Showers

Detailed Forecast

Today
Sunny and hot, with a high near 98. Heat index values as high as 106. Breezy, with a south wind 15 to 18 mph, with gusts as high as 29 mph.
Tonight
Mostly clear, with a low around 77. Windy, with a south wind 17 to 21 mph, with gusts as high as 32 mph.
Saturday
Sunny and hot, with a high near 100. Heat index values as high as 107. Windy, with a south southwest wind 18 to 22 mph, with gusts as high as 32 mph.
Saturday Night
Mostly clear, with a low around 76. Breezy, with a south wind around 18 mph, with gusts as high as 29 mph.
Sunday
Sunny and hot, with a high near 97. Windy, with a south wind 18 to 22 mph, with gusts as high as 33 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. Breezy. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 88. Chance of precipitation is 60%.
Monday Night
Showers and possibly a thunderstorm. Low around 62. Chance of precipitation is 90%.
Tuesday
Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 80%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 70%.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 86. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Denison IA
 42°N 95.38°W
Last Update:
3:34 am CDT Jun 20, 2025
Forecast Valid:
5am CDT Jun 20, 2025-6pm CDT Jun 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