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5-day forecast / Denison, TX

ThursdaySunny95° / 77° 1%
FridayMostly Sunny96° / 80° 1%
SaturdayMostly Sunny99° / 81° 2%
SundaySunny101° / 80° 2%
MondaySunny102° / 81° 1%

Dangerous Heat Index Hits 105F in Denison Tonight - Jul 22, 8 PM

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

Denison faces dangerous heat with a heat index of 105F tonight. Clear skies and high humidity persist, with temperatures remaining elevated through tomorrow.

Briar Iverson

July 23, 20262 min read

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

*As of Jul 22, 8 PM local time.*

Dangerous Heat and Humidity Persist

Denison is currently under the influence of dangerous heat conditions. The air temperature stands at 95F, but the heat index makes it feel like 105F. This significant disparity is driven by high humidity levels; the relative humidity is at 49%, with a dew point of 73F.

Winds are currently blowing from the east northeast at 8 mph, with gusts reaching up to 15 mph. The sky remains clear, offering no relief from the sun's intensity.

Forecast for Tonight and Tomorrow

Temperatures will remain high through the evening. Tonight, conditions will stay clear with a low near 75F. However, temperatures are expected to rise to around 77F overnight, keeping the heat index values as high as 110. Winds will shift to the east northeast, maintaining speeds between 5 to 10 mph.

Tomorrow, the heat will continue with sunny skies and a high near 95F. The heat index is forecast to reach as high as 101. Winds will come from the east at 5 to 10 mph.

The chance of precipitation is minimal at 1% for both today and tomorrow. While the sky will be mostly clear tomorrow night with a low around 77F, the heat index will remain elevated at 101, with winds from the east southeast at 5 to 10 mph.

Safety Reminders

Given the extreme heat index values, it is critical to take precautions. Stay hydrated by drinking plenty of water, even if you do not feel thirsty. Limit outdoor exertion, especially during the midday and afternoon hours when the sun is strongest.

Check on elderly neighbors and those without air conditioning, as the overnight temperatures will not drop significantly, providing little relief from the heat. Avoid direct sun exposure and wear lightweight, light-colored clothing if you must be outside. Monitor local updates for any changes in conditions, though no active weather alerts are currently in effect.

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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