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5-day forecast / McKinney, TX

ThursdaySunny100° / 80° 3%
FridaySunny103° / 80° 1%
SaturdaySunny97° / 74° 13%
SundaySunny95° / 73° 1%
MondaySunny96° / 76° 2%

McKinney Under Heat Advisory as Temperatures Climb Near 100 - Jul 29, 5 PM

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

A Heat Advisory is in effect for McKinney, TX, with heat index values reaching up to 106 degrees. Current conditions show a feels-like temperature of 103F.

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, 5 PM local time.*

Dangerous Heat Conditions Underway

McKinney, Texas, is currently under an active Heat Advisory issued by the National Weather Service in Fort Worth. This moderate-severity alert remains in effect until July 30 at 8:00 PM CDT, signaling dangerous heat conditions for the region. As of this Wednesday evening, the air temperature stands at 99F, but the combination of heat and humidity makes it feel like 103F.

The relative humidity is at 35%, with a dew point of 66F. Winds are blowing from the south southeast at 11 mph, with gusts reaching up to 13 mph under clear skies.

Forecast for Today and Tomorrow

The National Weather Service forecasts that today will remain mostly sunny with a high near 99F. The heat index is expected to reach as high as 104 during the day. South southeast winds will hover around 10 mph, and there is only a 1% chance of precipitation. Temperatures will drop to a low near 79F tonight.

Overnight conditions are expected to be partly cloudy, with lows around 79F. However, temperatures may rise slightly to around 81F during the night hours. The heat index could still reach 102, so the oppressive feel of the heat will persist. South winds will continue at 5 to 10 mph.

Tomorrow looks to be even hotter, with sunny skies and a high near 100F. The heat index is projected to climb as high as 106, making it significantly more dangerous than today. South southwest winds will remain light at 5 to 10 mph, with a 3% chance of rain.

Temperatures will settle to a low near 80F tomorrow night, though they may rise to around 82F overnight. The heat index could hit 105 during that period as well.

Safety Reminders

Given the active Heat Advisory and extreme heat index values, residents are urged to take precautions seriously. Stay hydrated by drinking plenty of water throughout the day. Limit outdoor exertion, especially during the midday hours when temperatures peak.

Check on elderly neighbors or those who may be vulnerable to heat-related illnesses. If you must be outside, seek air-conditioned spaces whenever possible and wear lightweight, light-colored clothing.

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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