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5-day forecast / Denison, TX

WednesdaySunny101° / 80° 1%
ThursdaySunny101° / 79°
FridaySunny101° / 79°
SaturdaySunny101° / 79°
SundaySunny102° / 79° 1%

Heat Advisory in Effect for Denison as Temperatures Soar to 101F - Aug 11, 4 PM

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

A Heat Advisory is active for Denison, TX, with heat index values reaching 107F today. Current conditions show a high of 97F with significant humidity.

Briar Iverson

August 11, 20262 min read

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

*As of Aug 11, 4 PM local time.*

Dangerous Heat Conditions Underway

Denison, TX, is currently under an active Heat Advisory issued by the National Weather Service in Fort Worth. The advisory carries moderate severity and is expected to remain in effect until 8:00 PM CDT today. Residents are experiencing dangerous heat levels right now, with the air temperature at 97F while the heat index makes it feel like 104F.

The atmosphere is quite humid, with a dew point of 70F and relative humidity holding at 42%. Winds are blowing from the south southwest at 14 mph, with gusts reaching up to 20 mph against a mostly clear sky.

Forecast for Today and Tomorrow

The National Weather Service forecasts sunny skies for today, with a high near 101F. During this period, heat index values are expected to climb as high as 107F. South southwest winds will persist around 10 mph. There is no chance of precipitation today.

Tonight, conditions will clear out, bringing a low around 80F. Temperatures may rise slightly overnight to around 82F. The heat index will remain elevated, peaking at 104F, with south winds continuing around 10 mph.

Tomorrow follows a similar pattern, featuring sunny skies and a high near 101F. Heat index values will reach up to 104F. South southwest winds will average 10 mph, with gusts as high as 20 mph.

The chance of precipitation remains negligible at just 1% for tomorrow.

Safety Reminders

Given the active Heat Advisory and extreme heat index values, it is critical to prioritize safety. Stay hydrated by drinking water frequently, even if you do not feel thirsty. Limit outdoor exertion, especially during the midday hours when solar intensity is highest.

If you must be outside, seek air-conditioned spaces whenever possible. Check on elderly neighbors or those without reliable cooling to ensure their well-being. Be aware that heat-related illnesses can develop quickly under these 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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