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5-day forecast / McKinney, TX

ThursdaySunny102° / 79°
FridaySunny101° / 80° 4%
SaturdaySunny101° / 79°
SundaySunny102° / 79°
MondaySunny102° / 79° 1%

Dangerous Heat and High Humidity Grip McKinney as Temperatures Soar - Aug 12, 5 PM

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

McKinney residents face dangerous heat with a feels-like temperature of 105F and high humidity. Sunny skies and strong winds continue through tomorrow with no active weather alerts.

Cody Esparza

August 12, 20262 min read

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

*As of Aug 12, 5 PM local time.*

Dangerous Heat and Humidity Conditions

McKinney is currently under the influence of dangerous heat conditions this evening. The air temperature stands at 95F, but the heat index makes it feel like 105F. This significant disparity is driven by quite humid air, with a dew point of 73F and relative humidity at 50%.

The sky remains clear, but the combination of high heat and moisture creates a stifling environment. Winds are blowing from the south at 14 mph, with gusts reaching up to 18 mph, offering little relief from the oppressive warmth.

Forecast for Today and Tomorrow

The National Weather Service indicates that sunny conditions will persist through today, with a high near 101F. The heat index is expected to climb as high as 110 during the day. South winds will continue around 15 mph, with gusts potentially reaching 25 mph. There is a zero percent chance of precipitation, ensuring dry but hot conditions.

Tonight, skies will remain clear with a low around 80F. The heat index will stay elevated, reaching up to 108. South winds will persist at around 15 mph, with gusts as high as 25 mph.

Tomorrow, the heat will not abate. Sunny skies will return with a high near 102F. The heat index is forecast to reach 108.

Winds will shift to the south southwest, increasing to 15 to 20 mph, with gusts as high as 30 mph. There is no chance of rain. Tomorrow night will be clear with a low around 79F, though temperatures may rise to around 81 overnight.

The heat index will remain high at 106, with south winds of 15 to 20 mph and gusts up to 30 mph.

Safety Reminders

With heat index values exceeding 105F, the risk of heat-related illness is significant. Residents are advised to stay hydrated and limit midday exertion. Check on elderly neighbors and those without air conditioning. Keep pets indoors and never leave them in vehicles. While there are no active weather alerts, the dangerous heat requires constant vigilance and preparation.

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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