Severe Thunderstorms and Heavy Rainfall Across the Midwest into the Great Lakes Region; Significant Heat in the Southwest

Strong to severe storms may produce damaging winds, isolated hail, and a few tornadoes from the Midwest into the lower Great Lakes. These storms may also produce areas of heavy rain and flash flooding. Significant heat will continue across parts of the Desert Southwest into western Texas and north Alaska. Dangerous heat will also build into the Eastern and Central U.S. and continue into next week. Read More >

Hazardous Weather Conditions

Current conditions at

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

A Few Clouds

75°F

24°C

Humidity 78%
Wind Speed N 7 mph
Barometer 29.86 in
Dewpoint 68°F (20°C)
Visibility 9.00 mi
Last update 18 Jun 11:35 am CDT
Extended Forecast for

Denison IA

  • Today

    Today: A 50 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly cloudy, with a high near 79. North northwest wind around 9 mph.  New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm.  Mostly clear, with a low around 58. North wind 5 to 8 mph becoming calm  in the evening.

    Low: 58 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 88. Light west southwest wind becoming south southwest 5 to 10 mph in the morning.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms after 1am.  Mostly clear, with a low around 68. South wind 9 to 13 mph, with gusts as high as 21 mph.

    Low: 68 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Friday

    Friday: Sunny and hot, with a high near 97. Breezy, with a south wind 10 to 20 mph, with gusts as high as 31 mph.

    High: 97 °F

    Hot and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 76. Breezy.

    Low: 76 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Windy.

    High: 99 °F

    Hot and Windy

  • Saturday Night

    Saturday Night: Clear, with a low around 76. Breezy.

    Low: 76 °F

    Clear and
    Breezy

  • Sunday

    Sunday: Sunny and hot, with a high near 97. Windy.

    High: 97 °F

    Hot and Windy

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 79. North northwest wind around 9 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 58. North wind 5 to 8 mph becoming calm in the evening.
Juneteenth
Sunny, with a high near 88. Light west southwest wind becoming south southwest 5 to 10 mph in the morning.
Thursday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 68. South wind 9 to 13 mph, with gusts as high as 21 mph.
Friday
Sunny and hot, with a high near 97. Breezy, with a south wind 10 to 20 mph, with gusts as high as 31 mph.
Friday Night
Mostly clear, with a low around 76. Breezy.
Saturday
Sunny and hot, with a high near 99. Windy.
Saturday Night
Clear, with a low around 76. Breezy.
Sunday
Sunny and hot, with a high near 97. Windy.
Sunday Night
A 30 percent chance of showers after 1am. Mostly clear, with a low around 72. Breezy.
Monday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 85. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Denison IA
 42.03°N 95.35°W
11:37 am CDT Jun 18, 2025
11am CDT Jun 18, 2025-6pm CDT Jun 24, 2025
 
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Additional Resources

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