McKinney Weather: Heat Persists With Late Storm Chances - Jul 5, 4 AM

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

Current conditions in McKinney are warm and clear at 73F. Today brings a high near 99F with a chance of showers after 10am, while tomorrow cools slightly to 96F under mostly sunny skies.

As of Jul 5, 4 AM local time.

Current Conditions and Today's Outlook

It is currently Sunday overnight in McKinney, with clear skies and a temperature of 73F. The air feels like 74F with 73% humidity and light winds at 8 mph.

Today, expect a high near 99F and a low near 77F. The sky will be partly sunny with a chance of showers and thunderstorms developing after 10am. While the chance of precipitation is 40%, little to no rain is expected through this evening, with chances staying at or below 19%.

Heat index values may reach 103F. Temperatures will fall to around 96F in the afternoon. Today’s high is about the same as yesterday’s.

Tonight and Tomorrow

Tonight, skies will turn mostly cloudy with a low around 74F. There is a 40% chance of showers and thunderstorms before 10pm. Heat index values could hit 99F. Winds will be east at 0 to 5 mph.

Tomorrow, the weather improves with mostly sunny skies and a high near 96F, which is about 3F cooler than today. The low will be near 74F. Heat index values may reach 100F. Winds will remain light, east southeast at 0 to 5 mph. It looks like a good day to enjoy the outdoors as the heat eases slightly.

Sources

National Weather Service radar

National Weather Service forecast data

Open-Meteo weather data

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5-day forecast / McKinney, TX