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5-day forecast / Denison, TX

FridaySlight Chance Showers And Thunderstorms then Mostly Sunny96° / 72° 19%
SaturdaySunny100° / 78° 3%
SundaySunny99° / 78°
MondaySunny98° / 78° 1%
TuesdaySunny99° / 78° 2%

Denison Heat Advisory: Dangerous Heat Index Expected Through Tomorrow - Sep 5, 2 PM

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

A Heat Advisory is active for Denison as air temperatures reach 95F and heat indices climb to 104F. Residents should stay hydrated and limit midday exertion.

Briar Iverson

September 5, 20262 min read

National Weather Service radar for North Texas (KFWS)

*As of Sep 5, 2 PM local time.*

Dangerous Heat Conditions

A Heat Advisory is currently active for the Denison area, signaling dangerous heat conditions that will persist through the upcoming period. As of this afternoon, the air temperature stands at 95F, but the combination of heat and humidity makes it feel like 100F. The relative humidity is 42%, with a dew point of 68F.

Winds are light at 7 mph, with gusts reaching 6 mph, and the sky remains mainly clear. This combination of high temperatures and low wind speeds creates an environment where the body struggles to cool itself effectively, increasing the risk of heat-related illness.

Forecast Outlook

The forecast indicates that these extreme conditions will continue. Today, the high is expected to reach near 101F, with heat index values climbing as high as 104F. The chance of precipitation is minimal at 3%, and the sky will remain mostly sunny.

Southeast winds will blow around 5 mph. Tonight, conditions will remain warm with a low near 79F. The sky will be mostly clear, and heat index values will still reach as high as 103F.

South winds will be light, ranging from 0 to 5 mph.

Tomorrow will bring similar conditions, with a high near 101F and heat index values again reaching 104F. The sky will be sunny, and the chance of rain is only 5%. East winds will be light at 0 to 5 mph.

Overnight, temperatures will stay warm with a low around 79F, potentially rising to 81F. Heat index values will remain high at 102F. Given the sustained high heat indices, it is crucial to take precautions.

Safety Reminders

Residents are urged to stay hydrated and limit outdoor exertion during the hottest parts of the day. Check on elderly neighbors and those without access to air conditioning. Avoid leaving pets or children in parked vehicles, as temperatures can rise rapidly.

Stay indoors in air-conditioned spaces when possible, and wear light-colored, loose-fitting clothing if you must be outside. Monitor for signs of heat exhaustion, such as heavy sweating, weakness, and dizziness, and seek medical attention if symptoms worsen.

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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