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5-day forecast / Van Alstyne, TX

ThursdaySunny100° / 78° 4%
FridayMostly Sunny101° / 78° 2%
SaturdaySunny95° / 72° 11%
SundaySunny92° / 72° 1%
MondaySunny94° / 75° 2%

Heat Advisory in Effect for Van Alstyne as Temperatures Climb - Jul 29, 6 PM

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

A Heat Advisory is active for Van Alstyne, TX. Current conditions show a heat index of 103F, with highs near 96F today and 100F tomorrow.

Marlene Ortiz

July 29, 20261 min read

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

*As of Jul 29, 6 PM local time.*

Dangerous Heat Conditions Underway

Van Alstyne residents are currently under an active Heat Advisory issued by the National Weather Service. This moderate-severity alert remains in effect until July 30 at 8:00PM CDT, signaling dangerous heat conditions that require caution.

Current observations indicate air temperatures of 99F with a heat index making it feel like 103F. The relative humidity stands at 35% with a dew point of 66F. Winds are blowing from the south-southeast at 11 mph, with gusts reaching 12 mph under clear skies.

Forecast for Today and Tomorrow

Today, expect partly cloudy skies with a high near 96F and a low near 77F. The chance of precipitation is minimal at just 1%.

Tonight, conditions will remain partly cloudy with lows around 77F. Temperatures may rise slightly to around 79F overnight. Heat index values are expected to reach as high as 101. Winds will shift to the south-southeast and decrease to 0 to 5 mph.

Tomorrow, the heat will intensify further with sunny skies and a high near 100F. The chance of rain remains very low at 4%. Heat index values could climb to 105. Winds will come from the south-southwest at 5 to 10 mph.

Looking ahead to tomorrow night, skies will become mostly clear with lows around 78F. Temperatures may rise to around 81F overnight, with heat indices reaching as high as 106. South winds will average around 10 mph.

Safety Reminders

Given the active Heat Advisory and dangerous heat index values, it is critical to stay hydrated and limit midday exertion. Check on elderly neighbors or those without air conditioning. Wear lightweight, light-colored clothing and seek air-conditioned environments during the hottest parts of the day.

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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Marlene Ortiz

Marlene Ortiz covers weather, storms, and seasonal life across Van Alstyne and Grayson County.

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