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5-day forecast / Denison, TX

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Heat Advisory in Effect for Denison as Feels-Like Temps Hit 108F - Jul 29, 4 PM

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

A Heat Advisory is active for Denison, TX, with dangerous heat index values reaching 108F today. Temperatures will remain dangerously high through tomorrow evening.

Briar Iverson

July 29, 20262 min read

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

*As of Jul 29, 4 PM local time.*

Dangerous Heat Conditions

A Heat Advisory is currently in effect for Denison, Texas, signaling dangerous heat conditions that require caution. As of this Wednesday afternoon, the air temperature stands at 99F, but the combination of heat and humidity makes it feel like 108F. The relative humidity is at 42%, with a dew point of 72F, contributing to the oppressive atmosphere.

Winds are blowing from the south-southeast at 11 mph, with gusts reaching 13 mph, while the sky remains clear.

The National Weather Service has issued this advisory due to the significant risk of heat-related illnesses. The official alert is active until July 30 at 8:00PM CDT. Residents are urged to monitor conditions closely as the heat index values are expected to remain elevated throughout the advisory period.

Forecast and Safety Guidance

Today, conditions will remain mostly sunny with a high near 100F. The heat index is forecast to reach as high as 103F. South-southeast winds will be around 5 mph. Tonight, skies will transition to partly cloudy, with a low around 78F. Temperatures will rise to around 80F overnight, with heat index values peaking at 101F. South winds will persist at around 5 mph.

Tomorrow, the heat will continue with mostly sunny skies and a high near 101F. The heat index is expected to climb to 106F, with south-southwest winds around 5 mph. Tomorrow night, skies will clear to mostly clear, with a low around 80F. Temperatures will rise to around 82F overnight, with heat index values reaching 105F. South winds will remain around 5 mph.

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

Seek air-conditioned environments as much as possible. Check on elderly neighbors and those who may be vulnerable to heat stress. Never leave people or pets in parked vehicles, as temperatures inside can rise rapidly to life-threatening levels.

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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