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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%

Heat Advisory in Effect for Allen as Temperatures Climb Near 100 - Jul 20, 8 AM

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

A Heat Advisory is active for Allen, TX, with current feels-like temperatures at 85F. Highs near 100F today and 103F tomorrow bring significant heat and humidity.

Zane Lowery

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 Allen, Texas, signaling dangerous heat levels for the region. The National Weather Service has issued this moderate-severity alert due to expected high temperatures and heat index values that will make conditions feel significantly hotter than the actual air temperature.

Right now, the air temperature stands at 81F, but the combination of heat and moisture makes it feel like 85F. Humidity levels are quite high, with the relative humidity at 79% and a dew point of 73F. Winds are light, blowing from the southwest at around 5 mph, with occasional gusts reaching 13 mph. The sky remains clear overhead.

Forecast for Today and Tomorrow

Today, the sun will dominate the sky with no rain expected, as the chance of precipitation is just 1%. Highs will reach near 100F. The heat index is forecast to climb as high as 107F, making it feel even more oppressive. Winds will remain light from the southwest around 5 mph.

Tonight, skies will become mostly clear. Lows will drop to around 80F, though temperatures may rise slightly to around 82F during the overnight hours. The heat index will remain elevated, peaking near 105F. Winds will shift to the south southwest, staying around 5 mph.

Tomorrow, the heat will intensify further. Expect sunny skies with highs near 103F. The heat index is expected to hit 107F again. Winds will come from the west southwest at approximately 5 mph. There is no chance of rain, with precipitation at 0%.

Safety Reminders

Given the active Heat Advisory and the extreme heat index values, it is critical to take precautions. Stay hydrated by drinking plenty of water throughout the day. Limit outdoor exertion, especially during the midday hours when the sun is strongest.

Check on elderly neighbors or those who may be vulnerable to heat-related illnesses. If you must be outside, seek shade and wear lightweight, light-colored clothing to help manage the intense heat and humidity.

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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