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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%

McKinney Heat Advisory in Effect as Temperatures Climb Near 100 - Jul 25, 8 AM

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

A Heat Advisory is active for McKinney, TX, with highs near 99F and heat index values up to 109. Humidity remains high with a dew point of 72F.

Cody Esparza· AI-assisted, edited by Jake Team

July 25, 20262 min read

Local sports

*As of Jul 25, 8 AM local time.*

Current Conditions and Alert Status

A Heat Advisory is currently in effect for McKinney, Texas, signaling moderate severity and expected urgency. Residents are advised to take precautions as the region experiences significant warmth and humidity. As of this Saturday morning, the air temperature stands at 81F, but the combination of moisture and heat makes it feel like 85F.

The relative humidity is at 74%, with a dew point of 72F, indicating quite humid conditions. Winds are blowing from the south southwest at 8 mph, with gusts reaching up to 23 mph. The sky remains mostly cloudy at this hour.

Forecast for Today and Tomorrow

Today, the sky will clear to become sunny. The high will reach near 99F, while the low settles near 80F. The chance of precipitation is minimal at 2%. According to the National Weather Service, heat index values will climb as high as 109. Winds will shift to a south southwest direction at around 10 mph.

Tonight, conditions will become mostly clear. Temperatures will drop to a low around 80F, though they may rise to around 82F overnight. The heat index is expected to remain elevated, with values as high as 105. Winds will continue from the south southwest at 5 to 10 mph.

Tomorrow, the sun will return with clear skies. The high will approach 101F, with a low near 80F. There is no chance of precipitation, recorded at 0%.

Heat index values will again reach as high as 109. Winds will be from the south southwest at 5 to 10 mph. Tomorrow night, skies will remain clear with a low around 80F and heat index values up to 106.

Winds will persist from the south at 5 to 10 mph.

Safety Reminders

With temperatures and heat index values soaring, it is crucial to stay hydrated and limit midday exertion. Check on neighbors, especially the elderly and those without air conditioning. Ensure pets have access to cool, shaded areas and plenty of water. Avoid prolonged exposure to the sun during peak heat hours to prevent heat-related illnesses.

Latest National Weather Service radar for North Texas (KFWS radar). Source: radar.weather.gov.

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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