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5-day forecast / Denison, TX

MondaySunny99° / 77° 2%
TuesdaySunny102° / 80° 1%
WednesdaySunny101° / 78°
ThursdaySunny98° / 78°
FridaySunny99° / 79° 1%

Denison Heat Index Hits 103 Today as Humidity Lingers - Jul 19, 12 PM

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

Denison faces oppressive heat with a high near 96F and heat index values up to 103 today. Humidity remains high with a dew point of 75F.

Briar Iverson

July 19, 20262 min read

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

*As of Jul 19, 12 PM local time.*

Current Conditions and Heat Stress

Denison is experiencing oppressive heat this Sunday afternoon. The air temperature stands at 86F, but the combination of heat and moisture makes it feel significantly hotter. The current feels-like temperature is 95F, driven by a relative humidity of 70% and a dew point of 75F.

Winds are blowing from the south southwest at 10 mph, with gusts reaching 13 mph. The sky is currently mainly clear, allowing intense solar heating to continue.

Forecast for Today and Tonight

Today will be mostly sunny with a high near 96F. The National Weather Service indicates that heat index values will climb as high as 103 during the day. There is a 20% chance of precipitation, though skies remain predominantly clear.

As evening approaches, conditions will shift to mostly clear skies for tonight. Temperatures will drop to a low around 78F, but the heat will linger, with temperatures rising to around 80F overnight. The heat index will remain as high as 103 even after sunset.

Winds will decrease to around 5 mph from the south, offering little relief from the muggy air. The chance of precipitation remains at 20% for the overnight period.

Tomorrow Outlook and Safety

Tomorrow will bring sunny skies and a high near 99F. The heat index is expected to reach 104, making it feel even more intense than today. Winds will be light, around 5 mph from the southwest.

Overnight lows will settle around 79F, with heat index values staying high at 104. There are no active National Weather Service or NOAA weather alerts in effect for Denison at this time. However, the extreme heat and humidity pose significant health risks.

Residents should stay hydrated and limit midday exertion. Check on neighbors, especially the elderly and those without air conditioning, to ensure their safety during these dangerously hot conditions.

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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