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5-day forecast / McKinney, TX

TuesdaySunny102° / 80°
WednesdaySunny101° / 81° 1%
ThursdayMostly Sunny101° / 81° 2%
FridayMostly Sunny103° / 82° 6%
SaturdaySunny100° / 76° 7%

McKinney Under Extreme Heat Warning as Temperatures Soar - Jul 21, 12 PM

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

An Extreme Heat Warning is in effect for McKinney, TX, with heat index values reaching 113 today. Current conditions show a feels-like temperature of 105F.

Cody Esparza

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 in Effect

McKinney, TX, is currently under an Extreme Heat Warning, a severe alert issued by the National Weather Service. The danger is immediate, with the air temperature at 97F and a feels-like temperature of 105F due to humidity. The relative humidity stands at 44%, with a dew point of 72F.

Winds are light, blowing at 3 mph with gusts up to 6 mph, under a clear sky.

The National Weather Service has highlighted the severity of the heat, noting that heat index values will reach as high as 113 today. Residents are advised to take this warning seriously. The high for today is near 104F, with a low near 82F.

The chance of precipitation is just 1%, with sunny skies expected throughout the day. Winds will remain light, from the west northwest at 0 to 5 mph.

Overnight and Tomorrow Forecast

Tonight, conditions will remain mostly clear. Temperatures will drop to a low around 82F, though they may rise to around 84F overnight. The heat index will remain high, with values as high as 111. Winds will shift to the southeast, blowing at 0 to 5 mph.

Tomorrow, the sun will return, bringing a high near 102F. The heat index is forecast to reach as high as 111. Winds will pick up slightly, coming from the north northeast at 0 to 10 mph. There is no chance of precipitation, with sunny skies expected.

Tomorrow night, the sky will be mostly clear. The low will be around 79F, with temperatures rising to around 81F overnight. The heat index will drop slightly but remain elevated at as high as 108. Winds will come from the east northeast at 5 to 10 mph.

Safety Reminders

Given the Extreme Heat Warning, it is critical to stay cool and hydrated. Limit outdoor exertion, especially during the hottest parts of the day. Check on neighbors and vulnerable individuals who may be at risk from the heat.

Ensure pets have access to shade and water. Do not leave anyone or any animal in a parked vehicle. Stay indoors in air-conditioned spaces as much as possible to avoid heat-related illnesses.

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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Cody Esparza

Cody Esparza covers McKinney city hall, the council, and county government.

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