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5-day forecast / Allen, TX

TuesdaySunny102° / 81°
WednesdaySunny101° / 82° 1%
ThursdayMostly Sunny101° / 82° 2%
FridayMostly Sunny102° / 82° 6%
SaturdaySunny100° / 77° 8%

Extreme Heat Warning in Effect for Allen as Temperatures Soar - Jul 21, 12 PM

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

An Extreme Heat Warning is active for Allen, TX, with heat index values reaching 112 today. Current conditions show a feels-like temperature of 105F under clear skies.

Zane Lowery

July 21, 20262 min read

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

*As of Jul 21, 12 PM local time.*

Dangerous Heat Conditions Underway

An Extreme Heat Warning is currently in effect for Allen, Texas, signaling severe and expected dangerous heat conditions. The National Weather Service in Fort Worth has issued this alert to warn residents of the significant risks associated with prolonged exposure to extreme temperatures.

Current conditions in Allen reflect the intensity of this heat event. The air temperature is recorded at 97F, but the combination of heat and humidity results in a feels-like temperature of 105F. The relative humidity stands at 44%, with a dew point of 72F, indicating a humid atmosphere that traps heat.

Winds are light, blowing at 3 mph with gusts reaching 7 mph, under a clear sky.

Forecast for Today and Tomorrow

According to the National Weather Service, today will be sunny with a high near 104F. The heat index is expected to reach as high as 112. Winds will be from the west northwest around 5 mph.

Tonight, skies will remain clear with a low around 83F. Temperatures may rise slightly to around 85F overnight. The heat index will remain elevated at up to 109, with south southeast winds between 0 and 5 mph.

Tomorrow, the heat will persist but with a slight decrease in peak temperatures. The forecast calls for sunny skies and a high near 102F. The heat index will climb to 111.

Winds will shift to the north northeast at 5 to 10 mph. Tomorrow night will be mostly clear with a low around 80F, rising to 82F overnight. The heat index will be up to 107, with east winds at 5 to 10 mph.

Safety Reminders

Given the severity of the Extreme Heat Warning, it is critical to take precautions. Hydrate frequently and limit midday exertion to avoid heat-related illnesses. Check on neighbors, especially the elderly and those without air conditioning, to ensure their safety. Stay in air-conditioned environments as much as possible during the peak heat hours.

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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Zane Lowery

Zane Lowery covers weather, storms, and seasonal life around Allen.

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