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5-day forecast / Denison, TX

FridaySunny95° / 78° 7%
SaturdaySunny100° / 79° 4%
SundaySunny100° / 79°
MondaySunny99° / 79°
TuesdaySunny99° / 79°

Denison Heat and Humidity Build Ahead of 100-Degree Day - Sep 11, 2 PM

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

Denison residents face muggy conditions today with a dew point of 73F. Temperatures will climb to 95F, followed by a hotter 100F day tomorrow. No weather alerts are active.

Briar Iverson

September 11, 20262 min read

National Weather Service radar for North Texas (KFWS)

*As of Sep 11, 2 PM local time.*

Muggy Afternoon Conditions

The afternoon in Denison is defined by significant humidity that makes the air feel heavier than the thermometer suggests. The current air temperature stands at 84F, but the combination of a 73F dew point and 70% relative humidity pushes the feels-like temperature to 91F. The sky remains clear, and winds are light at 5 mph with gusts reaching 8 mph.

This mugginess is the primary driver of the discomfort levels experienced during these hours.

Today and Tonight Outlook

Conditions will remain sunny for the rest of the day, with temperatures peaking near 95F. The heat index values are expected to reach as high as 100, reflecting the persistent moisture in the air. Southwest winds will stay around 5 mph.

As evening approaches, the sky will remain mostly clear, and temperatures will dip to a low near 78F. Despite the drop in air temperature, the heat index will still reach 99 due to the lingering humidity. South winds will continue to blow at approximately 5 mph.

Tomorrow’s Heat Spike

Tomorrow brings a significant increase in heat. The day will be sunny with a high near 100F. The heat index values are projected to climb to 103, indicating extreme mugginess.

Winds will shift to the south, ranging from 5 to 10 mph. The chance of precipitation is minimal at 4%. As the day ends, the sky will clear, and temperatures will settle to a low around 79F.

The heat index will remain high at 100, with south southeast winds blowing between 5 and 10 mph. There are no active National Weather Service alerts for the area. Given the high heat index values, it is wise to stay hydrated and limit strenuous outdoor activities during the hottest parts of the day.

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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