Back to Weather

5-day forecast / Denison, TX

FridayMostly Sunny93° / 70° 2%
SaturdayMostly Sunny94° / 72° 4%
SundaySlight Chance Rain Showers96° / 73° 24%
MondaySlight Chance Rain Showers then Mostly Sunny95° / 75° 18%
TuesdayChance Rain Showers91° / 70° 39%

Heat Advisory in Effect for Denison as Temperatures Climb Near 100 - Aug 10, 8 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 95F and highs near 100F expected today and tomorrow.

Briar Iverson

August 11, 20262 min read

National Weather Service radar for North Texas (KFWS)

*As of Aug 10, 8 PM local time.*

Current Conditions and Alert Status

Denison, TX, is currently under an active Heat Advisory issued by the National Weather Service. The advisory carries a moderate severity rating and is expected to remain in effect through the upcoming evening hours. Residents should take this warning seriously as heat indices rise significantly above actual air temperatures.

Right now, the air temperature stands at 92F, but the combination of humidity and heat makes it feel like 95F. The relative humidity is at 44%, with a dew point of 67F. Winds are blowing from the south at 11 mph, with gusts reaching up to 21 mph. The sky remains clear overhead, offering no relief from the sun’s intensity.

Today and Tomorrow Forecast

Today will be exceptionally hot, with a high near 100F. There is no chance of precipitation, and skies will stay clear throughout the day. Overnight tonight, conditions will remain clear with a low around 79F. Temperatures may rise slightly to around 81F during the night hours. The heat index is expected to reach as high as 101. South winds will persist at around 10 mph.

Tomorrow brings similar sweltering conditions. Expect a sunny day with a high near 100F. The heat index could climb as high as 107, making it feel even hotter than the actual air temperature. Winds will shift slightly to the south-southwest at around 10 mph. There is only a 1% chance of precipitation, so rain is not anticipated.

Tomorrow night will see clear skies again with a low around 80F. Temperatures may rise to around 82F overnight, with heat index values reaching up to 104. South winds will continue at approximately 10 mph.

Safety Reminders

Given the active Heat Advisory and extreme heat indices, it is crucial to stay hydrated by drinking plenty of water even if you do not feel thirsty. Limit outdoor exertion, especially during the midday and afternoon hours when the sun is strongest. Check on elderly neighbors or those without air conditioning to ensure their safety.

Wear lightweight, light-colored clothing and seek air-conditioned environments whenever possible to avoid heat-related illnesses.

National Weather Service radar for North Texas (KFWS)

Sources

National Weather Service radar

National Weather Service forecast data

Open-Meteo weather data

Share

Briar Iverson

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

Related Stories

Denison Weather: Steady Warmth and Clear Skies - Sep 24, 2 PM

Denison is enjoying a pleasant afternoon with clear skies and temperatures near 84F. Today's high will reach 93F, similar to yesterday, with little chance of rain. Tomorrow looks nearly identical with sunny skies and a high of 93F.

Briar IversonSeptember 24, 20261 min read

More in Sport