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5-day forecast / McKinney, TX

FridaySlight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms97° / 77° 25%
SaturdaySunny100° / 77° 4%
SundaySunny99° / 77° 2%
MondaySunny99° / 78° 1%
TuesdaySunny99° / 77° 2%

McKinney Weather: Humid Start, Hot Afternoon, Storms Possible Tonight - Sep 2, 8 AM

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

McKinney starts the day with high humidity and clear skies. Temperatures will climb near 98F, with heat indices reaching 102F. A chance of showers and thunderstorms is possible tonight and tomorrow morning.

Cody Esparza

September 2, 20262 min read

National Weather Service radar for North Texas (KFWS)

*As of Sep 2, 8 AM local time.*

Humid and Clear This Morning

McKinney is experiencing notably humid conditions this morning. The air temperature sits at 79F, but the high moisture content makes it feel like 82F. Relative humidity is at 79%, and the dew point is 72F, contributing to a muggy atmosphere.

The sky is currently clear, with light winds blowing at 3 mph and gusting to 6 mph. There are no active weather alerts in effect for the area.

Hot Afternoon Ahead

Residents should prepare for a hot afternoon as temperatures rise to a high near 98F. The heat index values are expected to reach as high as 102F, making the air feel significantly warmer than the actual temperature. The day will remain sunny with a low near 76F.

Winds will shift to the east southeast, ranging from 5 to 10 mph, with gusts potentially reaching 20 mph. The chance of precipitation is low at 9%, so dry conditions are expected for most of the day.

Storms Possible Tonight and Tomorrow

As night falls, the weather pattern will shift. A slight chance of showers and thunderstorms is possible between 1am and 4am, followed by a higher chance of storms later in the night. Skies will become partly cloudy, and the low temperature will hold near 76F.

Heat index values may reach 99F. Winds will come from the southeast at 10 to 15 mph. The chance of precipitation is 30%, with new rainfall amounts likely to be less than a tenth of an inch.

Tomorrow will bring a chance of showers and thunderstorms before 7am, followed by a slight chance of storms later. The high will be near 93F, with heat indices reaching 100F. Winds will be from the south southeast at 10 to 15 mph, with gusts up to 25 mph.

Given the high heat and humidity, it is wise to stay hydrated and limit strenuous outdoor activities during the hottest parts of the day.

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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