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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%

Humid Start for McKinney: Highs Near 89 With Scattered Storms - Jul 16, 8 AM

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

McKinney residents face high humidity with a dew point of 72F today. Temperatures will climb near 89F with a slight chance of afternoon showers and thunderstorms.

Cody Esparza

July 16, 20262 min read

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

*As of Jul 16, 8 AM local time.*

Current Conditions and Humidity

McKinney, TX is experiencing a notably humid start to the day. As of this morning, the air temperature sits at 75F, though the heat index makes it feel like 77F. The relative humidity is high at 89%, with a dew point of 72F indicating significant moisture in the air.

Winds are light, blowing at 3 mph with gusts reaching up to 11 mph. Despite the moisture, the sky remains mostly clear overhead.

Today and Tonight Forecast

Temperatures are expected to rise significantly throughout the day, with a high near 89F. The chance of precipitation is 31%, with conditions shifting from a slight chance of showers and thunderstorms in the morning to a chance of showers and thunderstorms later.

According to the National Weather Service, there is a slight chance of showers and thunderstorms between 7am and 10am, followed by a chance of showers and thunderstorms between 10am and 1pm. Partly sunny skies will prevail with south winds of 5 to 10 mph.

Tonight, the low will drop to near 74F, though temperatures may rise to around 76F overnight. There remains a chance of showers and thunderstorms before 10pm. Partly cloudy skies are expected with south winds continuing at 5 to 10 mph. The chance of precipitation stays at 30%.

Tomorrow Outlook

Conditions will warm up further tomorrow, with a high near 91F. The sky will be mostly sunny initially, with a slight chance of showers and thunderstorms after 1pm. Heat index values could reach as high as 100, making it feel hotter than the actual air temperature.

South winds will pick up slightly, ranging from 5 to 10 mph with gusts as high as 20 mph. The chance of precipitation drops to 20%.

Tomorrow night, the low will be around 76F. There is a slight chance of showers and thunderstorms before 7pm. Partly cloudy skies will return, with heat index values as high as 97. South winds will remain at 5 to 10 mph, with a 20% chance of precipitation.

Safety Reminder

With high humidity and rising heat indices, it is important to stay hydrated and limit prolonged outdoor exertion during the hottest parts of the day. Keep an eye on the sky for any developing storms, especially in the afternoon hours.

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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