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5-day forecast / McKinney, TX

WednesdaySunny83° / 65° 7%
ThursdayPartly Sunny83° / 65° 2%
FridaySlight Chance Rain Showers75° / 60° 23%
SaturdayChance Showers And Thunderstorms77° / 59° 48%
SundayPartly Sunny80° / 63° 8%

Humid Heat Grips McKinney Today; Storms Possible Tomorrow - Jul 11, 8 AM

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

McKinney faces high humidity with a dew point of 72F today. Temperatures will soar near 98F. Showers and thunderstorms are likely tomorrow with potential rainfall.

Cody Esparza· AI-assisted, edited by Jake Team

July 11, 20261 min read

National Weather Service radar for North Texas (KFWS)

*As of Jul 11, 8 AM local time.*

Current Conditions and Heat Index

McKinney is experiencing quite humid conditions this morning, with a dew point of 72F and relative humidity at 74%. The air temperature stands at 81F, but the heat index makes it feel like 85F. Winds are blowing from the south at 9 mph, with gusts reaching 17 mph, under a clear sky.

Today's Forecast

Expect a sunny day today with a high near 98F. The National Weather Service indicates heat index values will climb as high as 105. South winds will persist at 5 to 10 mph.

Overnight, skies will become mostly clear, with a low around 78F. Temperatures may rise to around 80F during the night, keeping the heat index as high as 103. There is only a 1% chance of precipitation today.

Tomorrow's Outlook

Conditions will shift tomorrow with a high near 96F and a low near 75F. The chance of precipitation rises to 40%. A slight chance of rain showers is possible between 10am and 1pm, followed by a chance of showers and thunderstorms between 1pm and 4pm.

Temperatures may fall to around 94F in the afternoon. South southwest winds will be around 5 mph. New rainfall amounts between a quarter and half of an inch are possible.

Tomorrow night brings a chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely, with a low around 75F. Heat index values may reach 101.

Safety Reminders

Given the high heat index values expected today and tomorrow, it is important to stay hydrated and limit midday exertion. Check on neighbors and vulnerable individuals who may be affected by the heat. While no active weather alerts are in effect, remain aware of changing conditions as storms approach tomorrow.

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· AI-assisted, edited by Jake Team

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

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