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5-day forecast / Denison, TX

SundaySunny101° / 80°
MondayMostly Sunny101° / 80°
TuesdaySunny102° / 81°
WednesdayMostly Sunny102° / 80° 1%
ThursdayMostly Sunny101° / 81° 2%

Denison Heat Advisory in Effect as Temperatures Soar to 101F - Jul 26, 4 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 109F today. Residents are urged to take precautions against dangerous heat.

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 26, 4 PM local time.*

Dangerous Heat Conditions Underway

A Heat Advisory is currently in effect for Denison, Texas, signaling dangerous heat conditions that require caution. As of this Sunday afternoon, the air temperature stands at 99F, but the combination of heat and humidity makes it feel like 106F. The relative humidity is at 40%, with a dew point of 70F, contributing to the muggy atmosphere.

Winds are blowing from the south southwest at around 10 mph, with gusts matching that speed, under a clear sky.

The National Weather Service has issued this advisory due to the significant risk of heat-related illnesses. The official alert remains in place until July 27 at 8:00PM CDT. This warning highlights the severity of the current conditions, urging residents to stay cool and hydrated.

Forecast for Today and Tomorrow

Today, Denison will experience sunny skies with a high near 101F. The heat index is expected to climb as high as 109F during the peak heat of the day. South southwest winds will be light, around 5 mph. There is a 0% chance of precipitation, ensuring no relief from the heat through rain.

Tonight, conditions will remain mostly clear with a low around 80F. The heat index will stay elevated, reaching as high as 106F. South winds will persist at 5 to 10 mph, offering little relief from the warmth.

Tomorrow, the pattern continues with mostly sunny skies and a high near 101F. The heat index will again reach up to 108F. Southwest winds will increase slightly to 5 to 10 mph. Like today, there is no rain expected, with a 0% chance of precipitation. Temperatures will remain dangerously high, requiring continued vigilance.

Safety Reminders

Given the active Heat Advisory and the high heat index values, it is critical to prioritize safety. 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 stress. Keep living spaces cool and avoid prolonged exposure to the sun. If you must be outside, seek shade and wear lightweight, light-colored clothing.

Monitor local weather updates for any changes to the advisory status.

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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