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5-day forecast / Denison, TX

SundaySunny101° / 79° 1%
MondayMostly Sunny101° / 80°
TuesdaySunny102° / 80° 1%
WednesdayMostly Sunny102° / 80° 1%
ThursdayMostly Sunny102° / 81° 1%

Heat Advisory in Effect for Denison as Temperatures Climb Near 101F - Jul 26, 8 AM

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

A Heat Advisory is active for Denison, TX, with highs near 101F and heat index values reaching 107F. Current conditions are hot and humid.

Briar Iverson

July 26, 20262 min read

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

*As of Jul 26, 8 AM local time.*

Current Conditions and Alert Status

A Heat Advisory is currently in effect for Denison, Texas, signaling dangerous heat levels that require caution. The National Weather Service has issued this moderate-severity alert due to the combination of high temperatures and significant humidity. As of this Sunday morning, the air temperature stands at 79F, with a feels-like temperature of 80F.

The atmosphere is quite humid, with a dew point of 70F and relative humidity at 74%. Winds are blowing from the south at 10 mph, with gusts reaching up to 25 mph, while the sky remains clear.

Forecast for Today and Tomorrow

Today will be intensely hot and sunny. The high is expected to reach near 101F. The National Weather Service notes that heat index values will climb as high as 107F. Winds will shift to the south southwest at 5 to 10 mph. The chance of precipitation is minimal at just 1%.

Tonight, skies will become mostly clear. Temperatures will drop to a low near 79F, but will rise to around 81F during the overnight hours. Heat index values will remain elevated, peaking at 107F. Winds will ease to a south direction at around 5 mph.

Tomorrow, the heat will persist with mostly sunny skies. The high will again be near 101F, with heat index values reaching 106F. South southwest winds will continue at 5 to 10 mph.

There is no chance of precipitation, listed at 0%. Overnight into the early hours of the next day, skies will clear further, with a low near 80F and temperatures rising to around 82F. Heat index values will hit 107F again, with south winds around 5 mph.

Safety Reminders

Given the active Heat Advisory and extreme heat index values, it is critical to stay cool and hydrated. Limit outdoor exertion, especially during the midday hours when the sun is strongest. Check on elderly neighbors and those without air conditioning. Wear lightweight, light-colored clothing and seek air-conditioned environments whenever possible. Remember that heat illness can develop quickly, so do not ignore signs of heat exhaustion.

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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