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5-day forecast / Denison, TX

TuesdaySunny103° / 79° 1%
WednesdaySunny100° / 78° 1%
ThursdaySunny97° / 78° 1%
FridaySunny99° / 81°
SaturdayMostly Sunny99° / 80° 9%

Denison Heat Advisory in Effect as Feels-Like Temps Hit 103F - Jul 20, 12 PM

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

A Heat Advisory is active for Denison, TX, with current feels-like temperatures reaching 103F. Sunny skies and high humidity will persist through tomorrow.

Briar Iverson

July 20, 20262 min read

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

*As of Jul 20, 12 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 oppressive temperatures and high humidity levels that pose significant health risks.

Right now, the air temperature stands at 91F, but the combination of heat and moisture makes it feel like 103F. The relative humidity is at 59%, with a dew point of 75F, creating an oppressively humid environment. Winds are currently blowing from the southwest at 8 mph, with gusts reaching 8 mph, under clear skies.

Forecast for Today and Tomorrow

Today, the sky will remain sunny with a high near 100F. The heat index is expected to reach as high as 106. Southwest winds will be around 5 mph. Tonight, conditions will clear with a low near 79F. Temperatures may rise to around 81F overnight, keeping the heat index elevated at 106. South southwest winds will persist at around 5 mph.

Tomorrow, the heat will intensify further. Expect sunny skies with a high near 103F. The heat index could climb to 108, making it feel even hotter than the actual air temperature.

West northwest winds will be around 5 mph. Tomorrow night, skies will clear again with a low around 81F. The heat index will remain high at 108, with south winds ranging from 0 to 5 mph.

Safety Reminders

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

Seek air-conditioned environments as much as possible. Check on neighbors, particularly the elderly and those without air conditioning, to ensure their safety. Do not leave people or pets in parked vehicles, as temperatures inside can rise rapidly to life-threatening levels.

Stay alert for signs of heat exhaustion and heat stroke, and seek medical attention immediately if symptoms occur.

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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