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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 Weather: Severe Thunderstorm Watch and Dangerous Heat - Jul 5, 4 PM

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

A Severe Thunderstorm Watch is in effect for McKinney as oppressive heat and humidity persist. Current conditions show a heat index of 105F with a chance of storms today.

Cody Esparza

July 5, 20262 min read

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

As of Jul 5, 4 PM local time.

Active Alerts and Current Conditions

A Severe Thunderstorm Watch is currently active for McKinney, Texas, issued by the National Weather Service in Fort Worth. This alert remains in effect until 10:00 PM CDT today, signaling an environment where conditions are favorable for the development of severe thunderstorms. Residents should remain vigilant for rapidly changing weather patterns.

Right now, the air temperature stands at 90F, but the oppressive humidity makes it feel significantly hotter. The relative humidity is at 71%, with a dew point of 79F, creating a muggy atmosphere. The current heat index, or "feels like" temperature, is 105F. Winds are light, blowing at 6 mph with gusts reaching 5 mph, under a clear sky.

Forecast for Today and Tomorrow

Today, the high will reach near 99F. Despite the clear start, there is a 38% chance of showers and thunderstorms. The National Weather Service indicates a chance of precipitation at 40%, with new rainfall amounts between a tenth and a quarter of an inch possible.

Temperatures are expected to fall to around 95F in the afternoon, though heat index values will remain as high as 103. Southeast winds will be around 5 mph.

Tonight, conditions will shift to mostly cloudy skies with a low near 76F. There is a 40% chance of showers and thunderstorms before 1am. Overnight, temperatures may rise slightly to around 78F, with heat index values up to 100. Winds will be light, from the northeast at 0 to 5 mph. Rainfall totals could again reach a tenth to a quarter of an inch.

Tomorrow, the weather will improve significantly. Expect mostly sunny skies with a high near 97F. The chance of precipitation drops to 10%. Heat index values will climb back up to 103. Northeast winds will remain light at 0 to 5 mph. Temperatures will drop to a low of 75F overnight, with a slight chance of showers and thunderstorms between 7pm and 1am.

Safety Reminders

Given the dangerous heat and humidity, it is crucial to stay hydrated and limit midday exertion. Check on neighbors, especially the elderly, who may be more vulnerable to heat stress. During the watch period, monitor local news for updates on storm developments.

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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