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5-day forecast / McKinney, TX

WednesdayMostly Sunny101° / 81° 1%
ThursdayMostly Sunny102° / 81° 2%
FridaySunny104° / 81° 4%
SaturdaySunny99° / 75° 13%
SundaySunny96° / 75° 2%

McKinney Heat Advisory in Effect as Temperatures Soar Near 101F - Jul 29, 6 AM

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

A Heat Advisory is active for McKinney, TX, with current conditions feeling like 82F. Highs near 101F today and 102F tomorrow bring extreme heat and high humidity.

Cody Esparza

July 29, 20262 min read

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

*As of Jul 29, 6 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 advisory to warn residents of dangerously hot conditions. As of this Wednesday morning, the air temperature stands at 79F, but the heat index makes it feel like 82F.

Humidity levels are quite high, with the relative humidity at 84% and a dew point of 73F. Winds are currently blowing at 7 mph with gusts reaching 11 mph, under a clear sky.

Forecast for Today and Tomorrow

Temperatures will climb significantly throughout the day. Today is expected to be mostly sunny with a high near 101F. The heat index will reach as high as 109F.

Winds will shift to the south southwest at 5 to 10 mph. The chance of precipitation is minimal at just 1%. Overnight, skies will clear to mostly clear conditions.

Temperatures will drop to a low around 80F, though they may rise slightly to around 82F later in the night. Winds will ease to around 5 mph from the south southwest.

Tomorrow continues the trend of intense heat. The day will be mostly sunny with a high near 102F. The heat index is forecast to peak at 107F.

Winds will remain from the south southeast at 5 to 10 mph. The chance of rain is negligible at 2%. Overnight into the early hours of the next day, skies will be mostly clear.

The low will be around 81F, with temperatures potentially rising to around 83F before dawn. Winds will stay light at 5 to 10 mph from the south southeast.

Safety Reminders

Given the active Heat Advisory and extreme heat index values, it is critical to prioritize safety. Stay hydrated by drinking water frequently, even if you do not feel thirsty. Limit outdoor exertion, especially during the midday hours when the sun is strongest.

Seek air-conditioned environments as much as possible. Check on elderly neighbors and those who may be vulnerable to heat-related illnesses. Never leave people or pets in parked vehicles.

Be aware of the signs of heat exhaustion and heat stroke, and seek medical attention immediately if symptoms appear.

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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