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5-day forecast / Van Alstyne, TX

SundaySunny100° / 78° 1%
MondaySunny100° / 79°
TuesdaySunny101° / 80°
WednesdayMostly Sunny101° / 80°
ThursdayMostly Sunny100° / 79° 3%

Heat Advisory in Effect for Van Alstyne as Temperatures Climb Near 100 - Jul 25, 8 PM

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

A Heat Advisory is active for Van Alstyne, TX, with current feels-like temperatures at 96F. Highs near 98F today will rise to 100F tomorrow, with heat indices reaching 109F.

Marlene Ortiz

July 26, 20262 min read

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

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

Current Conditions and Alert Status

A Heat Advisory is currently in effect for Van Alstyne, Texas, signaling moderate severity and expected urgency. Residents are advised to take precautions as the region experiences significant warmth. At this time on Saturday evening, the air temperature stands at 91F, but the combination of heat and humidity results in a feels-like temperature of 96F.

The relative humidity is at 46%, with a dew point of 68F. Winds are blowing from the south at 9 mph, with gusts reaching up to 15 mph, under a clear sky.

The National Weather Service has issued this advisory to highlight the potential for heat-related illnesses. While the official alert details specific timing, the immediate concern is the elevated heat index values that will persist through the overnight hours and into the next day. This advisory underscores the need for vigilance as temperatures remain well above seasonal averages.

Forecast for Today, Tonight, and Tomorrow

Today, Van Alstyne will see mostly clear skies with a high near 98F and a low near 78F. There is no chance of precipitation, with the probability listed at 0%. As tonight approaches, conditions will remain mostly clear.

The low will settle around 78F, though temperatures are expected to rise to around 80F overnight. The heat index will climb to values as high as 99F. South winds will continue around 10 mph.

Tomorrow, the heat will intensify further. The sky will be sunny with a high near 100F. The heat index is forecast to reach as high as 109F, creating dangerous conditions for prolonged outdoor exposure.

Southwest winds will be lighter, ranging from 5 to 10 mph. Tomorrow night, skies will clear again, with a low around 78F and temperatures rising to around 80F overnight. The heat index will remain elevated at up to 107F, with south winds of 5 to 10 mph.

Safety Reminders

Given the active Heat Advisory and extreme heat index values, it is crucial to stay hydrated and limit midday exertion. Seek air-conditioned environments during the peak heat hours of the day. Check on elderly neighbors and those without adequate cooling. Wear lightweight, light-colored clothing if you must be outdoors, and apply sunscreen regularly. Do not leave children or pets in parked vehicles.

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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