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5-day forecast / Denison, TX

FridaySlight Chance Rain Showers95° / 80° 1%
SaturdayMostly Sunny99° / 80° 2%
SundaySunny101° / 80°
MondaySunny102° / 81°
TuesdaySunny102° / 81°

Heat Advisory in Effect for Denison as Temperatures Climb Toward 99F - Jul 24, 12 PM

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

A Heat Advisory is active for Denison, TX, with oppressive humidity and highs near 99F tomorrow. Current conditions show a heat index of 88F with 94% relative humidity.

Briar Iverson

July 24, 20262 min read

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

*As of Jul 24, 12 PM local time.*

Current Conditions and Alert Status

Denison, TX, is currently under an active Heat Advisory issued by the National Weather Service. This moderate-severity alert, expected to remain in effect, underscores the dangerous combination of rising temperatures and oppressive humidity. Right now, the air temperature sits at 81F, but the heat index makes it feel like 88F.

The atmosphere is heavy, with relative humidity at 94% and a dew point of 79F, creating a muggy environment that limits evaporative cooling. Winds are blowing from the south at 8 mph, with gusts reaching 14 mph, while the sky remains partly cloudy.

Forecast for Today and Tonight

Today, residents can expect a high near 95F. There is a slight chance of rain showers before 4pm, though the overall chance of precipitation remains low at just 2%. The heat index is expected to climb as high as 104F during the day. South winds will average around 10 mph.

As evening approaches, skies will transition to partly cloudy conditions. Temperatures will drop to a low near 80F, but the heat will linger, with temperatures rising to around 82F overnight. The heat index will remain elevated, reaching values as high as 103F. Winds will ease slightly, shifting to a south direction at 5 to 10 mph.

Outlook for Tomorrow

Tomorrow, the heat will intensify significantly. The forecast calls for mostly sunny skies with a high near 99F. The heat index is projected to reach as high as 106F, making it feel significantly hotter than the actual air temperature.

South southwest winds will continue around 10 mph. The chance of precipitation remains minimal at 2%. Following tomorrow, conditions will clear out with a low around 80F and a heat index still high at 106F.

Safety Reminder

Given the active Heat Advisory and the oppressive humidity levels, it is crucial 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 the sun is strongest.

Check on elderly neighbors or those without air conditioning to ensure they are safe. If you must be outside, seek air-conditioned spaces as often as possible to avoid heat-related illnesses.

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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