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5-day forecast / Denison, TX

TuesdaySunny100° / 80°
WednesdaySunny99° / 79° 5%
ThursdaySunny100° / 78° 6%
FridaySunny99° / 76° 1%
SaturdaySunny99° / 76° 1%

Heat Advisory in Effect for Denison as Temperatures Climb Near 100 - Sep 15, 2 PM

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

A Heat Advisory is active for Denison, TX, with current feels-like temperatures at 101F. Highs near 100F are expected today and tomorrow.

Briar Iverson

September 15, 20262 min read

National Weather Service radar for North Texas (KFWS)

*As of Sep 15, 2 PM local time.*

Dangerous Heat Conditions Underway

Denison, TX, is currently under an active Heat Advisory issued by the National Weather Service. The alert carries a moderate severity rating with expected urgency, signaling that dangerous heat conditions are imminent for the area. Right now, the air temperature stands at 97F, but the combination of heat and humidity makes it feel like 101F.

Relative humidity is at 37%, with a dew point of 66F. Winds are blowing from the south at 12 mph, with gusts reaching up to 16 mph, while the sky remains clear.

Forecast for Today and Tomorrow

Today, conditions will remain sunny with a high near 100F. The National Weather Service notes that heat index values could reach as high as 104 during the day. South winds will be around 10 mph, and there is no chance of precipitation.

Tonight, skies will clear out, allowing temperatures to drop to a low near 80F. However, the heat will linger, with temperatures rising to around 82F overnight. Heat index values are expected to stay as high as 102. South winds will decrease to between 5 and 10 mph.

Tomorrow, the sun will return with a high near 99F. The heat will intensify further, with heat index values climbing to as high as 105. South winds will continue at 5 to 10 mph.

There is only a 5% chance of precipitation tomorrow. Tomorrow night, skies will be mostly clear with a low around 79F. Temperatures may rise slightly to around 81F overnight, with heat index values reaching 102.

Winds will shift to south-southeast at 5 to 10 mph.

Safety Reminders

Given the active Heat Advisory and feels-like temperatures exceeding 100F, residents are urged to take precautions. Stay hydrated by drinking plenty of water throughout the day. Limit outdoor exertion, especially during the hottest parts of the afternoon.

Check on elderly neighbors or those without air conditioning to ensure their safety. If you must be outside, seek shade and wear lightweight, light-colored clothing to help manage the intense heat.

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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