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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 Heat Index Hits 102 Today With Late Storms Possible - Jul 2, 12 PM

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

McKinney, TX, faces a very hot Thursday with a high near 95F and heat index values up to 102F. A chance of showers and thunderstorms develops this afternoon.

Cody Esparza

July 2, 20262 min read

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

As of Jul 2, 12 PM local time.

Current Conditions and Heat

It is currently Thursday this afternoon in McKinney, TX, where the air temperature stands at 88F. Due to high humidity, the feels-like temperature is 96F. The relative humidity is 62%, with a dew point of 73F, creating a muggy atmosphere. Winds are blowing from the south at 7 mph, with gusts reaching 12 mph. The sky remains clear at this moment.

Today and Tonight Forecast

Temperatures will climb to a high near 95F today. The National Weather Service indicates heat index values as high as 102F during the peak heat. South winds will persist at 5 to 10 mph. While the day starts mostly sunny, there is a chance of showers and thunderstorms after 4pm. The chance of precipitation is 30%.

As evening approaches, conditions will shift to mostly clear skies. A chance of showers and thunderstorms is possible before 7pm. Temperatures will drop to a low near 77F, though they may rise to around 79F overnight. Heat index values will remain elevated at up to 99F. Southeast winds will continue at 5 to 10 mph. The chance of precipitation remains at 30%.

Tomorrow Outlook

Tomorrow, McKinney will see similar heat, with a high near 95F. The heat index is expected to reach as high as 103F. Skies will be mostly sunny, with a slight chance of showers and thunderstorms developing after 4pm. The chance of precipitation is 20%. South winds will blow at 5 to 10 mph.

Overnight, skies will become partly cloudy. There is a slight chance of showers and thunderstorms before 7pm. The low will be around 79F, with temperatures rising to around 81F overnight. Heat index values will be as high as 100F. South southeast winds will continue at 5 to 10 mph. The chance of precipitation is 20%.

Safety Reminder

With heat index values exceeding 100F, it is critical to stay hydrated and limit midday exertion. Check on neighbors and vulnerable individuals who may be affected by the extreme heat. No active weather alerts are in effect, but conditions remain hot and humid.

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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