National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Strong to Severe Thunderstorms in the East; Heat in the Central and Western U.S.

Strong to potentially severe thunderstorms with damaging wind gusts are forecast Thursday from parts of New England into the Mid Atlantic and Carolinas. Significant heat will expand across the West and Central Plains through Friday, potentially breaking daily high temperature records. Dangerous heat will then build into the Eastern U.S. this weekend through much of next week. Read More >

Hazardous Weather Conditions

Current conditions at

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

Fair

84°F

29°C

Humidity 45%
Wind Speed Vrbl 6 G 16 mph
Barometer 30.00 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 19 Jun 1:15 pm CDT
Extended Forecast for

2 Miles WNW Arion IA

Extreme Heat Watch June 21, 12:00pm until June 22, 09:00pm
Click here for hazard details and duration
Extreme Heat Watch

  • Juneteenth

    Juneteenth: Sunny, with a high near 89. South southwest wind around 10 mph.

    High: 89 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 11pm. Mostly clear, with a low around 71. South wind 10 to 15 mph, with gusts as high as 23 mph.

    Low: 71 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Sunny and hot, with a high near 98. Heat index values as high as 105. Windy, with a south wind 16 to 22 mph, with gusts as high as 32 mph.

    High: 98 °F

    Hot and Windy

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. Windy, with a south wind around 21 mph, with gusts as high as 31 mph.

    Low: 75 °F

    Mostly Clear
    and Windy

  • Saturday

    Saturday: Sunny and hot, with a high near 98. Windy, with a south wind 17 to 22 mph, with gusts as high as 32 mph.

    High: 98 °F

    Hot and Windy

  • Saturday Night

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

    Low: 76 °F

    Mostly Clear
    and Breezy

  • Sunday

    Sunday: Sunny and hot, with a high near 98. Windy.

    High: 98 °F

    Hot and Windy

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Breezy.

    Low: 72 °F

    Chance
    T-storms and
    Breezy

  • Monday

    Monday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.

    High: 87 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Juneteenth
Sunny, with a high near 89. South southwest wind around 10 mph.
Tonight
A 20 percent chance of showers and thunderstorms after 11pm. Mostly clear, with a low around 71. South wind 10 to 15 mph, with gusts as high as 23 mph.
Friday
Sunny and hot, with a high near 98. Heat index values as high as 105. Windy, with a south wind 16 to 22 mph, with gusts as high as 32 mph.
Friday Night
Mostly clear, with a low around 75. Windy, with a south wind around 21 mph, with gusts as high as 31 mph.
Saturday
Sunny and hot, with a high near 98. Windy, with a south wind 17 to 22 mph, with gusts as high as 32 mph.
Saturday Night
Mostly clear, with a low around 76. Breezy.
Sunday
Sunny and hot, with a high near 98. Windy.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Breezy.
Monday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Monday Night
Showers and possibly a thunderstorm. Low around 63. Chance of precipitation is 80%.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 80%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Arion IA
 41.96°N 95.5°W
Last Update:
12:07 pm CDT Jun 19, 2025
Forecast Valid:
1pm CDT Jun 19, 2025-6pm CDT Jun 25, 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