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5-day forecast / Denison, TX

SundaySunny101° / 79° 1%
MondayMostly Sunny101° / 80°
TuesdaySunny102° / 80° 1%
WednesdayMostly Sunny102° / 80° 1%
ThursdayMostly Sunny102° / 81° 1%

Heat Advisory in Effect for Denison as Temperatures Climb Near 101F - Jul 26, 4 AM

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

A Heat Advisory is active for Denison, TX, with highs near 101F and heat index values up to 107F. Current conditions are hot and clear.

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 AM local time.*

Current Conditions and Alert Status

A Heat Advisory is currently in effect for Denison, Texas, signaling dangerous heat levels that require caution. The National Weather Service has issued this moderate-severity alert due to expected high temperatures and heat index values that will make it feel significantly hotter than the actual air temperature.

Right now, it is Sunday overnight. The air temperature stands at 80F, but the combination of humidity and heat makes it feel like 82F. The relative humidity is at 67%, with a dew point of 68F.

Winds are blowing from the south southwest at 8 mph, with gusts reaching up to 14 mph. The sky remains clear, offering no relief from the daytime warmth as the night progresses.

Forecast for Today and Tomorrow

Today, Denison will experience sunny skies with a high near 101F. The heat index is expected to reach as high as 107F, creating hazardous conditions for prolonged outdoor activity. Winds will remain from the south southwest at 5 to 10 mph. The chance of precipitation is minimal at just 1%.

Tonight, skies will be mostly clear. Temperatures will drop to a low around 80F, though they may rise slightly to around 82F during the overnight hours. The heat index will remain elevated, with values as high as 107F. Winds will shift to the south around 5 mph.

Tomorrow, the heat will persist with mostly sunny skies and a high near 101F. The heat index is forecast to be as high as 106F. Winds will continue from the south southwest at 5 to 10 mph. There is no chance of precipitation, at 0%. Temperatures will fall to a low near 80F, rising to around 82F overnight.

Safety Reminders

Given the active Heat Advisory and temperatures nearing 101F, it is critical to stay hydrated and limit midday exertion. Check on neighbors, especially the elderly and those without air conditioning. Avoid direct sun exposure during peak heat hours and seek air-conditioned environments whenever possible.

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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