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5-day forecast / Van Alstyne, TX

SundaySunny99° / 78° 1%
MondaySunny100° / 79°
TuesdaySunny100° / 80° 1%
WednesdayMostly Sunny101° / 80° 1%
ThursdayMostly Sunny101° / 80° 2%

Heat Advisory in Effect for Van Alstyne as Temperatures Climb Near 100 - Jul 26, 8 AM

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

A Heat Advisory is active for Van Alstyne, TX, with highs near 99F and heat index values up to 107F. Humidity remains high with a dew point of 72F.

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 26, 8 AM local time.*

Current Conditions and Alert Status

A Heat Advisory is currently in effect for Van Alstyne, Texas, signaling moderate severity and expected urgency. The National Weather Service has issued this alert to warn residents of dangerously high heat index values. As of this Sunday morning, the air temperature stands at 82F, but the combination of heat and moisture makes it feel like 87F.

The relative humidity is at 70%, with a dew point of 72F, indicating quite humid conditions that will persist through the day. Winds are currently blowing at 7 mph with gusts reaching 21 mph, under a clear sky.

Forecast for Today and Tomorrow

Today, the sun will dominate the sky with a high near 99F. The heat index is expected to reach as high as 107F. South southwest winds will average around 10 mph.

The chance of precipitation is minimal at just 1%. Overnight, conditions will become mostly clear with a low around 78F. Temperatures may rise to around 80F during the night, keeping the heat index as high as 104F.

South winds will continue at 5 to 10 mph.

Tomorrow, the heat will intensify slightly with a high near 100F. The sky will remain sunny, and the heat index could again peak at 107F. South southwest winds will persist around 10 mph.

There is no chance of precipitation, listed at 0%. Tomorrow night will be clear with a low around 79F. Temperatures may rise to around 81F overnight, with the heat index reaching 106F.

South winds will remain around 10 mph.

Safety Reminders

Given the active Heat Advisory and high heat index values, it is crucial to take precautions. Stay hydrated by drinking plenty of water throughout the day. Limit outdoor exertion, especially during the midday hours when the sun is strongest.

Check on neighbors, particularly the elderly and those without air conditioning. Wear lightweight, light-colored clothing and use sunscreen if you must be outside. Be aware of the signs of heat-related illnesses and seek air-conditioned spaces when possible.

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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