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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 102 Today With Slight Storm Chance - Jul 6, 12 PM

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

McKinney residents face a very hot Monday with a heat index reaching 102. A slight chance of showers and thunderstorms develops later today and continues into tomorrow.

Cody Esparza

July 6, 20262 min read

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

*As of Jul 6, 12 PM local time.*

Current Conditions and Heat Index

It is currently Monday afternoon in McKinney, TX, where the air temperature stands at 90F. Due to a dew point of 70F and relative humidity of 52%, the heat index is making it feel like 95F. The sky remains clear with winds at 0 mph and gusts up to 8 mph.

This combination of high heat and noticeable humidity creates a muggy atmosphere that can feel oppressive during the peak of the day.

Today and Tonight Forecast

Today, the high will reach near 95F, with temperatures settling around 93F in the afternoon. The National Weather Service indicates a slight chance of showers and thunderstorms after 4pm. The heat index is expected to climb as high as 102 during the day.

As evening approaches, skies will turn partly cloudy with a low near 74F. There is a slight chance of showers and thunderstorms before 10pm. Overnight, temperatures may rise slightly to around 76F, with heat index values staying as high as 99.

Winds will remain light from the southeast at 0 to 5 mph. The chance of precipitation is 20% for both the afternoon and evening periods.

Tomorrow Outlook

Tomorrow, conditions will remain hot and humid. The high will be near 94F, dropping to around 92F in the afternoon. A chance of showers and thunderstorms is expected after 1pm, with the overall chance of precipitation at 30%.

New rainfall amounts less than a tenth of an inch are possible. Overnight, skies will become mostly clear with a low around 76F. Showers and thunderstorms are possible before 7pm, with heat index values reaching 97.

Winds will shift to south southeast around 5 mph. There are no active National Weather Service or NOAA weather alerts in effect for this area.

Safety Reminder

Given the high heat index values, it is important to stay hydrated and limit midday exertion. Check on neighbors and elderly relatives to ensure they are safe in the heat. If storms develop, seek shelter indoors immediately.

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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