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5-day forecast / Denison, TX

ThursdayMostly Sunny100° / 81° 2%
FridayMostly Sunny103° / 79° 10%
SaturdaySunny95° / 72° 8%
SundaySunny93° / 71°
MondaySunny96° / 74° 1%

Heat Advisory in Effect for Denison as Temperatures Climb Near 103 - Jul 30, 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 110 degrees tomorrow. Current conditions show a heat index of 106F.

Briar Iverson

July 30, 20262 min read

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

*As of Jul 30, 4 PM local time.*

Dangerous Heat Conditions Underway

A Heat Advisory is currently in effect for Denison, Texas, signaling dangerous heat conditions for the region. The National Weather Service has issued this moderate-severity alert due to rising temperatures and high humidity levels that will make the heat feel significantly more intense than the actual air temperature.

As of this afternoon, the air temperature stands at 99F, but the combination of heat and moisture pushes the feels-like temperature to 106F. The relative humidity is at 40%, with a dew point of 70F, indicating substantial moisture in the air. Winds are blowing from the south at 8 mph, with gusts reaching up to 11 mph.

The sky remains partly cloudy, offering little relief from the sun.

Forecast for Today and Tomorrow

Today, the National Weather Service forecasts mostly sunny skies with a high near 100F. Heat index values are expected to reach as high as 107. South winds will persist at 5 to 10 mph.

Tonight, conditions will clear up with mostly clear skies and a low around 81F. The heat index will remain elevated, staying as high as 106, while south winds drop to around 5 mph.

Tomorrow, the heat will intensify further. Expect mostly sunny skies with a high near 103F. The heat index is projected to soar to 110, creating hazardous conditions for outdoor activities.

Southwest winds will increase to around 10 mph. Looking ahead to tomorrow night, there is a slight chance of showers and thunderstorms between 7pm and 1am. Skies will be partly cloudy with a low around 79F, though temperatures may rise to around 81 overnight.

The heat index will remain high at 108, with west winds at 5 to 10 mph. Precipitation chances are 20%, with new rainfall amounts less than a tenth of an inch possible.

Safety Reminders

Given the active Heat Advisory and dangerous heat index values, it is critical to stay hydrated and limit midday exertion. Check on neighbors, especially the elderly and those without air conditioning. Seek air-conditioned environments during the peak heat hours to avoid heat-related illnesses.

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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