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5-day forecast / Denison, TX

TuesdaySunny103° / 81° 1%
WednesdaySunny100° / 78° 1%
ThursdaySunny97° / 78° 1%
FridaySunny99° / 81°
SaturdayMostly Sunny99° / 80° 9%

Denison Heat Advisory in Effect as Temperatures Climb to 102F - Jul 20, 8 AM

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

A Heat Advisory is active for Denison, TX, with heat index values reaching 108F. Current conditions are humid with a dew point of 73F. Sunny skies persist through tomorrow.

Briar Iverson

July 20, 20262 min read

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

*As of Jul 20, 8 AM local time.*

Current Conditions and Alert Status

A Heat Advisory is currently in effect for Denison, Texas, signaling moderate severity and expected urgency. The National Weather Service in Fort Worth issued this advisory on July 19 at 11:05PM CDT, and it remains active until July 20 at 8:00PM CDT. Residents should be aware that this alert is in place due to dangerously high heat index values expected over the next day.

Right now, the air temperature in Denison is 79F, but the combination of heat and moisture makes it feel like 82F. Humidity levels are quite high, with the relative humidity sitting at 84% and a dew point of 73F. Winds are blowing from the southwest at 8 mph, with gusts reaching up to 19 mph.

The sky is currently clear, offering no relief from the sun's intensity.

Forecast for Today and Tomorrow

Today will be sunny with a high near 99F. The National Weather Service forecasts heat index values as high as 105F during the day. Winds will shift to the southwest around 5 mph.

The chance of precipitation is minimal at 2%. Temperatures will drop to a low near 79F tonight, though they are expected to rise to around 81F overnight. Conditions will remain mostly clear with south southwest winds around 5 mph.

Heat index values will continue to reach as high as 105F even after sunset.

Tomorrow will bring another sunny day with a high near 102F. The heat index is forecast to climb even higher, reaching values as high as 107F. Winds will come from the west southwest around 5 mph.

The chance of rain is just 1%. Following tomorrow, the low will be around 80F, with temperatures rising to around 82F overnight. Heat index values may reach as high as 108F during that period, with south southwest winds between 0 to 5 mph.

Safety Reminder

Given the active Heat Advisory and the potential for heat index values to exceed 105F, it is crucial to stay cool and hydrated. Limit outdoor exertion during the hottest parts of the day and check on neighbors who may be vulnerable to extreme heat. Ensure that pets and livestock have access to plenty of fresh water and shade.

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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