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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 Heat Returns to McKinney With Slight Storm Chance - Jul 15, 12 PM

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

McKinney residents face humid conditions with a dew point of 70F today. Highs near 90F bring a slight chance of showers and thunderstorms this afternoon and tomorrow.

Cody Esparza

July 15, 20262 min read

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

*As of Jul 15, 12 PM local time.*

Current Conditions and Humidity

McKinney is experiencing quite humid air this Wednesday afternoon. The current air temperature sits at 84F, but the heat index makes it feel like 88F. Relative humidity is at 62%, with a dew point of 70F indicating significant moisture in the atmosphere. Winds are light at 6 mph with gusts reaching 7 mph, and the sky remains mostly cloudy.

Today and Tonight Forecast

Temperatures will climb to a high near 90F today before dropping to a low near 73F tonight. The sky will be mostly sunny initially, transitioning to a slight chance of showers and thunderstorms later in the day. According to the National Weather Service, this slight chance of precipitation occurs after 1pm.

Overnight, there is a slight chance of showers and thunderstorms before 10pm. Partly cloudy skies will prevail with a low around 73, though temperatures may rise to around 75 during the night. South winds will increase to 5 to 10 mph.

Tomorrow Outlook

Conditions remain similar tomorrow with a high near 90F and a low near 75F. The chance of precipitation rises to 28%. Rain showers are possible between 7am and 1pm, followed by a slight chance of showers and thunderstorms between 1pm and 4pm.

A chance of showers and thunderstorms persists later in the day. New rainfall amounts between a tenth and quarter of an inch are possible. South southeast winds will continue at 5 to 10 mph.

Safety and Alerts

There are no active National Weather Service or NOAA weather alerts in effect for McKinney at this time. However, the high humidity and heat index warrant caution. Residents should stay hydrated and limit midday exertion when possible.

Keep an eye on the sky for developing clouds, as the slight chance of storms means conditions can change quickly. Ensure outdoor activities are planned for cooler parts of the day if you are sensitive to heat.

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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