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5-day forecast / Denison, TX

SaturdaySunny97° / 78° 1%
SundayChance Showers And Thunderstorms94° / 74° 47%
MondayChance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms92° / 73° 51%
TuesdaySunny91° / 73° 13%
WednesdayMostly Sunny then Slight Chance Showers And Thunderstorms91° / 74° 17%

Dangerous Heat Hits Denison as Humidity Rises; Storms Possible Tomorrow - Jul 11, 4 PM

Denison weather, updated every four hours — local forecasts you can trust.

Denison faces dangerous heat with a feels-like temperature of 101F today. While skies are sunny, humidity is high. Showers and thunderstorms are likely tomorrow.

Briar Iverson

July 11, 20262 min read

National Weather Service radar for North Texas (KFWS)
National Weather Service radar for North Texas (KFWS)

*As of Jul 11, 4 PM local time.*

Dangerous Heat and High Humidity

Denison is currently under the influence of dangerous heat conditions this afternoon. The air temperature stands at 93F, but the combination of heat and moisture makes it feel significantly hotter, with a feels-like temperature of 101F. This intense heat index is driven by high humidity levels, with the relative humidity at 50% and a dew point of 72F. Winds are blowing from the south at 9 mph, with gusts reaching up to 16 mph, while the sky remains partly cloudy.

Today and Tonight Forecast

Today will remain sunny with a high near 97F. The National Weather Service indicates heat index values could reach as high as 103 during the day. Winds will shift to a south direction at around 5 mph. As evening approaches, conditions will clear up. Tonight is expected to be mostly clear with a low around 78F. Heat index values may stay as high as 102. There is a chance of showers and thunderstorms developing after 4am, with a 30% chance of precipitation. Winds will remain southerly at approximately 5 mph.

Tomorrow’s Storm Potential

Temperatures will drop slightly tomorrow, with a high near 94F. The day begins with a chance of showers and thunderstorms before 10am, followed by a continued chance of showers and thunderstorms throughout the day. Skies will be mostly sunny. The heat index is forecast to reach 102. Winds will come from the south-southeast at around 5 mph. The chance of precipitation is 50%, with new rainfall amounts between a tenth and a quarter of an inch possible.

Safety Reminders

Given the dangerous heat levels today, it is critical to stay hydrated and limit midday exertion. Seek air-conditioned spaces when possible and check on neighbors who may be vulnerable to heat stress. As storms approach tomorrow, be prepared for potential wet roads and reduced visibility. Always monitor local updates for any changes in weather conditions.

National Weather Service radar for North Texas (KFWS)

Sources

https://radar.weather.gov

https://api.weather.gov

https://open-meteo.com

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Briar Iverson

Briar Iverson covers weather, storms, and seasonal life around Denison.

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