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5-day forecast / Denison, TX

SundaySunny100° / 78° 2%
MondaySunny99° / 78° 5%
TuesdaySunny99° / 79° 2%
WednesdaySunny100° / 80°
ThursdaySunny101° / 79° 1%

Dangerous Heat Index Hits 101F in Denison This Afternoon - Aug 9, 12 PM

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

Denison residents face dangerous heat with a heat index of 101F today. Sunny skies and high humidity persist through tomorrow with no active weather alerts.

Briar Iverson

August 9, 20262 min read

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

*As of Aug 9, 12 PM local time.*

Current Conditions and Heat Risk

Denison is experiencing dangerous heat conditions this Sunday afternoon. The air temperature stands at 93F, but the combination of heat and humidity pushes the feels-like temperature to 101F. Relative humidity is at 50%, with a dew point of 72F indicating quite humid air. Winds are blowing from the south at 7 mph, with gusts reaching 9 mph. The sky remains clear overhead.

Forecast for Today and Tomorrow

The National Weather Service forecasts continued hot and sunny conditions for the immediate future. Today will see a high near 99F with a low near 78F. The chance of precipitation is just 1%. Heat index values are expected to reach as high as 102 during the day. South winds will range from 5 to 10 mph.

Tonight, skies will stay clear. Temperatures will drop to a low around 78F, though they may rise to around 80F overnight. The heat index will remain elevated, with values as high as 99. South winds will continue at 5 to 10 mph.

Tomorrow brings another sunny day with a high near 99F and a low near 79F. The chance of precipitation remains minimal at 1%. Heat index values are forecast to climb to 102. South winds will be around 10 mph. Tomorrow night will be clear with a low around 79F and heat index values up to 99.

Safety Reminders

There are no active National Weather Service or NOAA weather alerts for Denison at this time. However, the extreme heat index values pose significant health risks. Residents should stay hydrated and limit midday exertion to avoid heat-related illnesses. Check on elderly neighbors and ensure pets have access to cool, shaded areas. Avoid prolonged exposure to the sun during peak heat hours.

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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