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5-day forecast / Denison, TX

SaturdaySunny99° / 80° 1%
SundaySunny101° / 79° 1%
MondaySunny101° / 80°
TuesdaySunny103° / 80°
WednesdayMostly Sunny102° / 80°

Heat Advisory in Effect for Denison as Temperatures Climb Near 100 - Jul 25, 12 PM

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

A Heat Advisory is active for Denison, TX, with heat index values reaching 107 today. Humidity remains high with a dew point of 70F. Conditions improve slightly tomorrow.

Briar Iverson

July 25, 20261 min read

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

*As of Jul 25, 12 PM local time.*

Current Conditions and Alert Status

A Heat Advisory is currently in effect for Denison, Texas, signaling moderate severity and expected urgency. The National Weather Service has issued this alert to warn residents of dangerous heat levels. As of this afternoon, the air temperature stands at 88F, but the combination of heat and moisture makes it feel significantly warmer.

The feels-like temperature is 93F, driven by a relative humidity of 55% and a dew point of 70F. Winds are light at 5 mph with gusts reaching 15 mph, and the sky remains mostly cloudy.

Today and Tonight Forecast

Today, residents can expect a high near 99F. There is a slight chance of rain showers before 10am, but conditions will clear to sunny skies for the remainder of the day. The low is near 80F tonight.

As the sun sets, the sky will become mostly clear. However, temperatures will rise to around 82F overnight, keeping the heat index values as high as 105. Winds will continue from the south southwest at 5 to 10 mph.

The chance of precipitation for today is 10%, but it drops to just 1% for tomorrow.

Tomorrow Outlook and Safety

Tomorrow, the heat will persist with a high near 100F under sunny skies. The heat index is expected to reach 106. Overnight, conditions will be clear with a low around 79F. Winds will shift to the south at around 5 mph.

Given the active Heat Advisory and high heat index values, it is crucial to stay hydrated and limit midday exertion. Check on elderly neighbors and ensure pets have access to cool water and shade. Avoid prolonged exposure to the sun during the hottest parts of the day to prevent heat-related illnesses.

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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