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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%

Heat Advisory in Effect for McKinney as Temperatures Soar Near 102F - Jul 22, 8 PM

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

A Heat Advisory is active for McKinney, TX, with today's high near 102F and heat index values reaching 112 tonight. Residents are urged to stay cool and hydrated.

Cody Esparza

July 23, 20262 min read

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

*As of Jul 22, 8 PM local time.*

Current Conditions and Alert Overview

A Heat Advisory is currently in effect for McKinney, Texas, signaling dangerous heat conditions that require caution. As of this evening, the air temperature stands at 93F, with a feels-like temperature of 93F. The relative humidity is at 48%, and the dew point is 72F, indicating significant moisture in the air despite the clear skies.

Winds are blowing from the east-northeast at 7 mph, with gusts reaching up to 15 mph.

The National Weather Service has issued this advisory due to the extreme heat expected to persist through the overnight hours and into tomorrow. The advisory is classified as moderate in severity and is expected to impact the area during the specified timeframe.

Residents should be aware that the heat index values, which combine temperature and humidity to reflect how hot it feels, will be notably high.

Forecast for Today, Tonight, and Tomorrow

Today, McKinney is expected to reach a high near 102F under mostly clear skies. The chance of precipitation is minimal at just 1%. As the day transitions into tonight, conditions will remain mostly clear.

Temperatures will drop to a low near 77F, but will rise to around 79F during the overnight hours. The heat index will climb as high as 112, making the night feel significantly hotter than the actual air temperature. Winds will shift to the east-northeast, ranging from 5 to 10 mph.

Tomorrow, the sun will shine brightly with a high near 98F. The sky will remain sunny, and the chance of precipitation stays at 1%. The heat index will reach up to 105 during the day.

Winds will continue from the east-northeast, with speeds between 5 and 15 mph. Looking ahead to tomorrow night, skies will be mostly clear again. Temperatures will fall to a low near 78F, then rise to around 80F overnight.

The heat index will peak at 106, with winds from the east-southeast at 5 to 15 mph.

Safety Reminders

Given the active Heat Advisory and the high heat index values, it is crucial to take precautions. Stay hydrated by drinking plenty of water, even if you do not feel thirsty. Limit outdoor exertion, especially during the hottest parts of the day.

Check on elderly neighbors and those who may be vulnerable to heat-related illnesses. Keep vehicles parked in the shade if possible, and never leave people or pets in parked cars. Layering up is not necessary here; instead, focus on cooling down and seeking air-conditioned environments when possible.

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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