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5-day forecast / Denison, TX

SundaySunny101° / 79° 1%
MondaySunny101° / 80°
TuesdaySunny103° / 80°
WednesdayMostly Sunny102° / 80°
ThursdayMostly Sunny101° / 80° 6%

Heat Advisory in Effect for Denison as Temperatures Climb Near 100 - Jul 25, 8 PM

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

A Heat Advisory is active for Denison, TX, with current feels-like temperatures at 100F. Highs near 101F expected tomorrow with heat indices reaching 108F.

Briar Iverson

July 26, 20262 min read

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

*As of Jul 25, 8 PM local time.*

Dangerous Heat Conditions Underway

A Heat Advisory is currently in effect for Denison, Texas, signaling dangerous heat conditions for the area. The National Weather Service has issued this moderate-severity alert due to the combination of high temperatures and humidity that will make it feel significantly hotter than the actual air temperature.

As of this Saturday evening, the air temperature stands at 94F, but the heat index makes it feel like 100F. The relative humidity is at 44%, with a dew point of 69F. Winds are blowing from the south at 9 mph, with gusts reaching up to 10 mph. The sky remains clear, offering no relief from the sun's intensity.

Forecast for Today, Tonight, and Tomorrow

Today, residents can expect a high near 100F under mostly clear skies. There is no chance of precipitation, with conditions remaining dry and hot. The low for the day is near 79F.

Tonight, the sky will stay mostly clear. Temperatures will drop to a low around 79F, though they may rise to around 81F later in the night. The heat index is expected to remain high, with values reaching as high as 105. South winds will continue at 5 to 10 mph.

Tomorrow, the heat will persist with sunny skies and a high near 101F. The heat index is forecast to climb even higher, with values as high as 108. Southwest winds will be light, ranging from 5 to 10 mph.

Overnight into tomorrow night, conditions will clear out, with a low around 79F and temperatures rising to around 81F. The heat index will remain elevated at 108, with south winds around 5 mph.

Safety Reminders

Given the active Heat Advisory and the dangerous heat index values, it is crucial to take precautions. Stay hydrated by drinking plenty of water, even if you do not feel thirsty. Limit outdoor exertion, especially during the midday hours when the sun is strongest.

Check on elderly neighbors and those who may be vulnerable to heat-related illnesses. If you must be outside, seek shade and wear lightweight, light-colored clothing to help manage 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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