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5-day forecast / McKinney, TX

TuesdaySunny99° / 79° 1%
WednesdaySunny99° / 78° 2%
ThursdaySunny98° / 77° 2%
FridaySunny99° / 75°
SaturdaySunny98° / 75° 4%

McKinney Heat Advisory: Dangerous Heat Index Expected Through Tomorrow - Sep 14, 2 PM

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

A Heat Advisory is active for McKinney as temperatures reach 97F and feel like 102F. Sunny skies and high heat indices are expected today and tomorrow, with lows remaining warm overnight.

Cody Esparza

September 14, 20262 min read

National Weather Service radar for North Texas (KFWS)

*As of Sep 14, 2 PM local time.*

Current Conditions and Alert Status

A Heat Advisory is currently in effect for the McKinney area, issued by the National Weather Service in Fort Worth. This moderate-severity alert is expected to remain active until tomorrow evening. Residents should be aware that dangerous heat conditions are present right now.

The air temperature is currently 97F, but the combination of heat and humidity means it feels like 102F. Relative humidity stands at 39%, with a dew point of 68F. Winds are blowing from the south at 8 mph, with gusts reaching 16 mph.

The sky is mostly clear, offering little relief from the direct solar radiation.

Today and Tonight Outlook

Today will remain sunny with a high near 100F. The heat index values are expected to climb as high as 105F, making the perceived temperature significantly higher than the actual air temperature. South winds will range from 10 to 15 mph, with gusts potentially reaching 25 mph.

Tonight, conditions will stay clear with a low around 79F. However, temperatures are expected to rise to around 81F overnight, keeping the heat index near 102F. South winds will continue at 10 to 15 mph.

The chance of precipitation is minimal, at just 1%.

Tomorrow's Forecast and Safety

Tomorrow will follow a similar pattern, with sunny skies and a high near 101F. Heat index values are projected to reach 104F. South winds will be around 10 mph, with gusts up to 20 mph.

The low temperature will be near 78F, rising to about 80F overnight, with heat indices near 102F. Winds will shift to south-southeast at 5 to 10 mph, with gusts to 20 mph. Precipitation chances remain at 1%.

Given the sustained high heat indices and warm overnight lows, it is crucial to stay hydrated and limit outdoor exertion during the hottest parts of the day. Check on vulnerable neighbors and ensure pets have access to shade and water.

National Weather Service radar for North Texas (KFWS)

Sources

National Weather Service radar

National Weather Service forecast data

Open-Meteo weather data

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Cody Esparza

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

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