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5-day forecast / Denison, TX

SundaySunny101° / 80° 5%
MondaySunny101° / 80° 1%
TuesdaySunny101° / 79° 1%
WednesdaySunny99° / 78° 1%
ThursdaySunny98° / 76° 5%

Denison Heat Advisory: Dangerous Heat Index Expected Through Tomorrow - Sep 13, 2 PM

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

A Heat Advisory is active for Denison as temperatures hover near 100F. Residents should stay hydrated and limit midday exertion as heat index values reach 105F.

Briar Iverson

September 13, 20262 min read

National Weather Service radar for North Texas (KFWS)

*As of Sep 13, 2 PM local time.*

Current Conditions and Alert Status

A Heat Advisory is currently active for the Denison area, issued by the National Weather Service in Fort Worth. This moderate-severity alert remains in effect until 8:00 PM CDT on September 14. The primary concern is dangerous heat levels, with the air temperature currently sitting at 99F.

Due to the combination of heat and humidity, the feels-like temperature has reached 102F. The sky is clear, and winds are blowing from the south southeast at 13 mph. Relative humidity stands at 33%, with a dew point of 64F.

These conditions create a significant risk for heat-related illness if proper precautions are not taken.

Today's and Tonight's Outlook

Today will remain sunny with a high near 101F. The heat index values are expected to peak as high as 105F, making the air feel significantly hotter than the actual temperature. Winds will shift to around 10 mph from the south southeast.

The chance of precipitation is minimal at 5%. As night falls, skies will remain mostly clear. Temperatures will drop to a low near 80F, though they may rise slightly to around 82F overnight.

The heat index will still reach 103F during the evening hours. Winds will ease to 5 to 10 mph from the south southeast.

Tomorrow's Forecast and Safety Reminders

Tomorrow will follow a similar pattern, with sunny skies and a high near 101F. The heat index is expected to reach 103F. Winds will vary between 5 and 15 mph from the south.

The chance of rain is extremely low at 1%. Tonight, conditions will remain mostly clear with a low near 80F, potentially rising to 82F. The heat index will stay elevated at 101F.

Given the sustained high temperatures, it is crucial to stay hydrated and limit outdoor exertion during the hottest parts of the day. Check on elderly neighbors and those without air conditioning to ensure they are safe and comfortable.

National Weather Service radar for North Texas (KFWS)

Sources

National Weather Service radar

National Weather Service forecast data

Open-Meteo weather data

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Briar Iverson

Briar Iverson covers weather, storms, and seasonal life around Denison.

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