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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%

Allen Heat Index Hits 105 Tonight as Temperatures Climb Toward 101 Tomorrow - Jul 19, 8 PM

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

Allen residents face a humid, sweltering Sunday evening with a heat index of 105. Tomorrow brings sunny skies and a high near 101F, with minimal rain chances.

Zane Lowery

July 20, 20261 min read

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

*As of Jul 19, 8 PM local time.*

Current Conditions and Heat Stress

Allen is experiencing a notably hot and humid evening right now. The air temperature stands at 90F, but the combination of heat and moisture pushes the feels-like temperature to 98F. Relative humidity is at 59%, with a dew point of 73F, creating a muggy atmosphere. Winds are light at 7 mph, with gusts reaching 12 mph, under partly cloudy skies.

Today and Tonight Forecast

Today remains very hot, with a high near 99F. There is a 22% chance of precipitation, with a slight chance of showers and thunderstorms expected before conditions become mostly clear later in the day. The low tonight will be near 79F.

Overnight, the heat lingers. A slight chance of showers and thunderstorms is possible before 10pm, though the sky will become mostly clear. Temperatures will drop to around 79F initially, then rise to around 81F as the night progresses. The heat index will reach as high as 105. South winds will blow at 5 to 10 mph, with a 20% chance of precipitation.

Tomorrow Outlook

Tomorrow will be sunny and significantly hotter, with a high near 101F. The heat index is expected to peak at 107. South southwest winds will be around 5 mph.

The chance of precipitation drops to just 1%. Tomorrow night will be clear, with a low around 80F. Temperatures will rise to around 82F overnight, with a heat index as high as 105 and south southwest winds around 5 mph.

Safety Reminder

With heat indices exceeding 100F, it is critical to stay hydrated and limit midday exertion. Check on elderly neighbors and ensure pets have access to cool, shaded areas. Avoid prolonged exposure to the sun during 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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