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5-day forecast / Denison, TX

WednesdayMostly Sunny105° / 82°
ThursdaySunny then Slight Chance Showers And Thunderstorms106° / 79° 18%
FridaySunny105° / 79° 9%
SaturdaySunny105° / 80° 7%
SundaySunny105° / 81° 1%

Denison Under Extreme Heat Warning as Temperatures Approach 105F - Aug 19, 2 PM

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

An active Extreme Heat Warning is in effect for Denison. Current conditions show 95F air with a 98F feel, while today's high is near 105F. Residents should prioritize hydration and limit midday exertion.

Briar Iverson

August 19, 20262 min read

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

*As of Aug 19, 2 PM local time.*

Severe Heat Alert in Effect

An active Extreme Heat Warning from the National Weather Service covers the Denison area, signaling severe conditions that require caution. The alert remains in effect until the evening, highlighting the persistent danger of extreme heat. Currently, the air temperature stands at 95F, but the combination of humidity and heat makes it feel like 98F.

The sky is clear, and winds are blowing at 11 mph with gusts reaching the same speed. Relative humidity is at 39%, with a dew point of 66F. These current readings underscore the intensity of the heat building throughout the afternoon.

Today’s Forecast and Conditions

Today is expected to be mostly sunny, with the high temperature reaching near 105F. The low temperature will be near 82F. There is no chance of precipitation, meaning the heat will remain dry and intense.

Heat index values are expected to reach as high as 107F, indicating that the perceived temperature will be significantly higher than the actual air temperature. Winds will be from the south southwest at around 10 mph. Tonight, the sky will remain mostly clear, with lows around 82F, though temperatures may rise to around 85F overnight.

Heat index values will continue to reach 107F, and winds will shift to 5 to 10 mph from the south southwest.

Tomorrow’s Outlook and Safety

Tomorrow will be sunny with a high near 106F and a low near 79F. There is an 18% chance of precipitation, with a slight chance of showers and thunderstorms after 4 pm. Heat index values will again reach as high as 107F.

Winds will be from the west southwest at 5 to 10 mph. Given the sustained extreme heat, it is crucial to stay hydrated and limit outdoor exertion during the hottest parts of the day. Check on neighbors, especially those who are elderly or live alone, and ensure that pets have access to shade and water.

Avoid leaving people or animals in parked vehicles, as temperatures can rise rapidly in enclosed spaces.

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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