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5-day forecast / Denison, TX

FridaySlight Chance Showers And Thunderstorms then Mostly Sunny96° / 77° 19%
SaturdaySunny100° / 78° 3%
SundaySunny99° / 78°
MondaySunny98° / 78° 1%
TuesdaySunny99° / 78° 2%

Denison Heat Index Reaches 102 Degrees as Sunny Skies Persist - Aug 29, 2 PM

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

Residents in Denison are facing dangerous heat conditions this afternoon, with the air temperature at 99 degrees and a heat index of 102. Sunny skies and low humidity are expected to continue through tomorrow.

Briar Iverson

August 29, 20262 min read

National Weather Service radar for North Texas (KFWS)

*As of Aug 29, 2 PM local time.*

Current Conditions and Immediate Outlook

The afternoon in Denison is defined by intense heat, with the air temperature currently sitting at 99 degrees. Due to the atmospheric conditions, the heat index feels like 102 degrees, placing the weather in the dangerous heat category. The sky remains clear, and relative humidity is low at 33 percent, with a dew point of 64 degrees.

Winds are light, blowing from the south at 5 miles per hour with gusts also reaching 5 miles per hour. There are no active National Weather Service alerts in effect for the area.

Today and Tonight

The day will remain sunny with a high near 101 degrees. The heat index values are expected to reach as high as 101 degrees during the peak of the day. As evening approaches, the sky will stay mostly clear.

Temperatures will drop to a low around 78 degrees, though they are expected to rise back to around 80 degrees overnight. The heat index will remain high, reaching values as high as 99 degrees. Winds will shift to a south-southeast direction, maintaining a speed of around 5 miles per hour.

The chance of precipitation is zero percent for the remainder of the day.

Tomorrow's Forecast

Tomorrow will bring similar conditions, with sunny skies and a high near 102 degrees. The heat index values are projected to reach as high as 102 degrees, continuing the pattern of dangerous heat. Winds will come from the south-southwest at speeds between 5 and 10 miles per hour.

The low temperature will be near 79 degrees, with overnight temperatures rising to around 81 degrees. The heat index will stay elevated, reaching values as high as 101 degrees. Winds will shift to the south at 5 to 10 miles per hour.

With no rain in the forecast, residents should prioritize hydration and limit midday exertion to stay safe in the extreme heat.

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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