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5-day forecast / Allen, TX

ThursdaySunny105° / 82° 13%
FridayMostly Sunny then Slight Chance Showers And Thunderstorms105° / 82° 22%
SaturdaySunny105° / 81° 8%
SundaySunny105° / 82° 3%
MondaySunny104° / 82° 4%

Extreme Heat Warning Active in Allen as Temperatures Approach 105 Degrees - Aug 20, 6 AM

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

An Extreme Heat Warning is in effect for Allen. Current temperatures are 81F, with a high near 105F expected today. Heat index values may reach 111F. Stay hydrated and limit midday exertion.

Zane Lowery

August 20, 20262 min read

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

*As of Aug 20, 6 AM local time.*

Severe Heat Warning in Effect

An Extreme Heat Warning is currently active for the Allen area, issued by the National Weather Service in Fort Worth. This severe alert remains in effect until this evening. Residents should take immediate precautions to avoid heat-related illness.

The current air temperature is 81F, but it feels like 83F due to 66% relative humidity and a dew point of 68F. Winds are blowing from the south southwest at 8 mph, with gusts reaching 17 mph. The sky is currently clear, offering no relief from the rising heat.

Today's Forecast and Conditions

Today will be sunny with a high near 105F. The heat index values are expected to reach as high as 111F, making the air feel significantly hotter than the actual temperature. The low will be near 83F.

There is only a 13% chance of precipitation, so dry conditions will persist. Winds will shift to the south southwest at 5 to 10 mph. Tonight, the sky will remain mostly clear.

Temperatures will drop to a low around 83F but are expected to rise to around 85F overnight. The heat index will stay high, reaching values as high as 108F. Winds will be light from the south southeast at around 10 mph.

Tomorrow's Outlook and Safety

Tomorrow will bring similar extreme heat, with a high near 105F and a low near 82F. The sky will be mostly sunny, but there is a slight chance of showers and thunderstorms after 1pm. The chance of precipitation is 22%.

Heat index values will again reach as high as 111F. Winds will be light from the south southwest at around 5 mph. Given the sustained high temperatures and high heat index values, it is critical to stay hydrated and limit outdoor exertion during the hottest parts of the day.

Check on elderly neighbors and those without access to air conditioning. Avoid leaving pets or children in parked vehicles, as temperatures can rise rapidly in enclosed spaces. Stay indoors in air-conditioned areas whenever possible 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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