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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%

McKinney Heat Index Hits 100 Today; Humidity Lingers - Jul 3, 12 PM

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

McKinney, TX residents face a very hot Friday with a high near 94F and a feels-like temperature of 96F. Humidity is notable with a dew point of 72F. No severe weather alerts are active.

Cody Esparza

July 3, 20262 min read

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

As of Jul 3, 12 PM local time.

Current Conditions and Heat Index

It is currently Friday this afternoon in McKinney, TX, and the heat is already intense. The air temperature stands at 90F, but the combination of heat and moisture pushes the feels-like temperature to 96F. Relative humidity is at 56%, with a dew point of 72F, indicating quite humid conditions that make the air feel heavier.

Winds are light, blowing at 7 mph with gusts reaching 12 mph, under a clear sky.

Forecast for Today and Tonight

Temperatures will climb further today, reaching a high near 94F. The National Weather Service indicates heat index values as high as 100 during the day. There is a slight chance of showers and thunderstorms after 4pm, with a 20% chance of precipitation. Winds will remain from the south southeast at 5 to 10 mph.

As evening approaches, the slight chance of showers and thunderstorms continues before 7pm. Skies will become partly cloudy overnight. The low will settle near 78F, though temperatures may rise to around 80F later in the night. The heat index will remain elevated at values as high as 99. Winds will persist from the south southeast at 5 to 10 mph.

Tomorrow Outlook

Conditions will warm significantly tomorrow. The sky will be sunny with a high near 98F. The heat index is expected to reach as high as 104, making it feel extremely hot. Winds will shift slightly to the south southwest, maintaining speeds of 5 to 10 mph. There is only a 3% chance of precipitation, so skies will remain clear.

Safety Reminder

With temperatures and heat indices soaring, it is crucial to stay hydrated and limit midday exertion. Check on neighbors, especially the elderly or those without air conditioning, to ensure they are safe in the heat. While there are no active National Weather Service or NOAA weather alerts, the extreme heat poses a significant risk to health and safety.

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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