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5-day forecast / Denison, TX

MondaySunny105° / 80° 12%
TuesdaySunny106° / 82° 3%
WednesdaySunny105° / 82° 1%
ThursdaySunny104° / 79° 2%
FridaySunny102° / 77° 9%

Denison Heat Advisory: Highs Near 105F Expected Today - Aug 17, 11 AM

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

A Heat Advisory is active for Denison as temperatures reach 90F this morning. Today's high will near 105F with sunny skies, and tomorrow will be even hotter at 106F.

Briar Iverson

August 17, 20261 min read

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

*As of Aug 17, 11 AM 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 is expected to remain in effect until this evening. As of this morning, the air temperature stands at 90F, matching the feels-like temperature.

The relative humidity is 38%, with a dew point of 61F. Winds are blowing from the northwest at 8 mph, with gusts reaching 14 mph. The sky is mostly clear, setting the stage for a very hot day ahead.

Today and Tonight Outlook

Residents should prepare for intense heat today, with the high temperature expected to reach near 105F. The day will remain sunny, and the chance of precipitation is only 12%. Temperatures may dip slightly to around 103F in the afternoon, but heat index values will remain as high as 105F.

Northwest winds will be light, around 5 mph. Tonight, the sky will be mostly clear, and the low temperature will hover near 80F. Interestingly, temperatures may rise to around 82F overnight, with heat index values reaching 102F.

East southeast winds will be around 5 mph.

Tomorrow's Forecast and Safety

Tomorrow will bring even more heat, with a high near 106F and sunny skies. The chance of rain drops to just 3%. Heat index values could reach 106F, and southwest winds will be around 5 mph.

Given the sustained high temperatures and low humidity, 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, as the combination of heat and low humidity can pose significant health risks. Stay indoors when possible and use air conditioning to maintain a safe environment.

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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