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5-day forecast / Denison, TX

FridaySunny102° / 80°
SaturdaySunny101° / 80°
SundaySunny102° / 79°
MondaySunny103° / 79° 7%
TuesdaySunny103° / 80°

Heat Advisory in Effect for Denison as Temperatures Soar - Aug 13, 5 PM

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

A Heat Advisory is active for Denison, TX, with dangerous heat index values reaching 106F today. Current conditions show 99F with high winds.

Briar Iverson

August 13, 20262 min read

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

*As of Aug 13, 5 PM local time.*

Dangerous Heat Conditions

A Heat Advisory is currently in effect for Denison, Texas, signaling dangerous heat conditions that require caution. The National Weather Service has issued this moderate-severity alert due to the combination of high temperatures and humidity levels that will make it feel significantly hotter than the actual air temperature.

As of this evening, the air temperature stands at 99F, but the heat index makes it feel like 103F. The relative humidity is at 35%, with a dew point of 66F. Winds are blowing from the south at 15 mph, with gusts reaching up to 29 mph, under clear skies.

Forecast Details

Today remains sunny with a high near 102F. The heat index is expected to climb as high as 106F during the day. There is no chance of precipitation. Tonight will be clear with a low around 79F. Temperatures may rise slightly overnight to around 81F, keeping the heat index as high as 105F. South winds will persist at 10 to 15 mph.

Tomorrow continues the hot trend with sunny skies and a high near 102F. The heat index will reach up to 105F. South winds will be around 10 mph, with gusts as high as 20 mph.

No rain is expected. Tomorrow night will be mostly clear with a low around 80F. Overnight temperatures may rise to around 82F, with the heat index peaking at 104F.

South winds will remain between 10 and 15 mph.

Safety Reminder

Given the active Heat Advisory and dangerous heat index values, it is critical to stay hydrated and limit outdoor exertion during the hottest parts of the day. Check on neighbors, especially the elderly or those without air conditioning, to ensure their safety. Wear lightweight, light-colored clothing and seek air-conditioned environments whenever possible.

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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