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5-day forecast / Dallas, TX

TuesdaySunny104° / 81° 1%
WednesdaySunny104° / 82°
ThursdaySunny100° / 81° 1%
FridaySunny102° / 83° 1%
SaturdayMostly Sunny102° / 83° 7%

Dallas Heat Advisory in Effect as Temperatures Climb to 105F - Jul 20, 4 PM

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

A Heat Advisory is active for Dallas as current feels-like temperatures reach 104F. Sunny skies and rising heat indices are expected through tomorrow.

Demarcus Lindgren

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, 4 PM local time.*

Dangerous Heat Conditions Underway

Dallas is currently under an active Heat Advisory, signaling moderate severity and expected urgency for the region. The National Weather Service has issued this alert to warn residents of dangerously high temperatures that will persist through the upcoming days. As of this afternoon, the air temperature stands at 100F, but the heat index makes it feel like 104F.

The relative humidity is at 31% with a dew point of 64F. Winds are currently calm at 0 mph, though gusts have reached up to 11 mph. The sky remains clear overhead.

Forecast for Today and Tomorrow

The National Weather Service forecasts sunny conditions for today with a high near 101F. The heat index is expected to reach as high as 108 during the day. South winds will be around 5 mph.

Tonight, skies will clear with a low near 81F. Temperatures may rise slightly to around 83F overnight. The heat index will remain elevated, reaching up to 107.

South southwest winds will persist at around 5 mph.

Tomorrow will see continued sunny skies with a high near 105F. This marks a significant increase in heat, with the heat index expected to climb to 110. West southwest winds will be around 5 mph.

Tomorrow night will be clear with a low around 84F. Temperatures may rise to around 86F overnight, with the heat index reaching 108. South southwest winds will be light, ranging from 0 to 5 mph.

The chance of precipitation remains minimal at 1% for both days.

Safety Reminders

Given the active Heat Advisory and the dangerous heat index values, residents are urged to take precautions. Extreme heat poses serious health risks, so it is critical to stay hydrated and limit midday exertion. Seek air-conditioned environments whenever possible, especially during the peak heat hours.

Check on neighbors and vulnerable individuals who may be at greater risk from the heat. Avoid prolonged exposure to the sun and wear lightweight, light-colored clothing if you must be outdoors. Monitor local weather updates for any changes to the advisory status.

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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Demarcus Lindgren

Demarcus Lindgren covers weather, storms, and seasonal life around Dallas.

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