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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%

Heat Advisory in Effect for McKinney as Temperatures Climb Near 100 - Jul 24, 8 AM

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

A Heat Advisory is active for McKinney, TX, with heat indices reaching 107. Current conditions are oppressively humid with a dew point of 77F.

Cody Esparza

July 24, 20262 min read

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

*As of Jul 24, 8 AM local time.*

Current Conditions and Alert Status

A Heat Advisory is currently in effect for McKinney, Texas, signaling moderate severity and expected urgency. The National Weather Service has issued this alert to warn residents of dangerous heat levels. Right now, the air temperature stands at 81F, but the oppressive humidity makes it feel significantly warmer.

The current feels-like temperature is 87F, driven by a relative humidity of 89% and a dew point of 77F. Skies are currently cloudy, and winds are blowing from the south-southeast at 9 mph, with gusts reaching 12 mph.

Forecast for Today and Tonight

Today, conditions will shift to partly sunny skies with a high near 97F. The heat index is expected to soar as high as 107, creating hazardous conditions for prolonged outdoor exposure. Winds will increase slightly, coming from the south-southeast at 10 to 15 mph.

The chance of precipitation is low at 6%. As evening approaches, skies will become partly cloudy with a low around 80F. Temperatures may actually rise to around 82F overnight, keeping the heat index as high as 106.

South winds will continue at 10 to 15 mph, offering little relief from the humidity.

Outlook for Tomorrow

Tomorrow, the heat will persist with mostly sunny skies and a high near 99F. The heat index is forecast to reach 107 again. Winds will shift to the south-southwest at around 10 mph.

The chance of rain drops to just 1%. Overnight, skies will clear to mostly clear, with a low around 80F and temperatures rising to around 82F. The heat index will remain elevated at 105, with south winds decreasing to 5 to 10 mph.

Safety Reminder

With heat indices exceeding 105, it is critical to stay hydrated and limit midday exertion. Check on elderly neighbors and ensure pets have access to cool water and shade. 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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Cody Esparza

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

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