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5-day forecast / Van Alstyne, TX

TodayMostly Sunny90° / 73° 1%
ThursdayMostly Sunny95° / 76° 1%
FridayChance Showers And Thunderstorms90° / 75° 53%
SaturdayShowers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms90° / 76° 58%
SundayMostly Sunny95° / 78° 6%

Heat Advisory in Effect for Van Alstyne as Temperatures Climb

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

A Heat Advisory is active for Van Alstyne, TX, with highs near 95F and heat index values up to 107F. Humidity remains high overnight.

Marlene Ortiz

June 17, 20262 min read

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

Current Conditions and Alert Status

A Heat Advisory is currently in effect for Van Alstyne, Texas, signaling moderate severity and expected urgency. Residents should prepare for significantly elevated temperatures and heat index values that may feel much hotter than the actual air temperature. The National Weather Service has issued this advisory to highlight the potential for heat-related illnesses if proper precautions are not taken.

As of Wednesday overnight, the air temperature stands at 75F, with a feels-like temperature of 77F. Humidity levels are notably high, with relative humidity at 89% and a dew point of 72F. The sky is clear, and winds are blowing from the south at 6 mph, with gusts reaching up to 17 mph. These conditions contribute to the muggy atmosphere that will persist into the coming days.

Forecast for Today and Tomorrow

Today, Van Alstyne will experience mostly sunny skies with a high near 90F and a low near 73F. The chance of precipitation is minimal at 1%. Heat index values are expected to reach as high as 97F. Winds will be from the south at 10 to 20 mph, with gusts as high as 25 mph. This combination of heat and wind will make the day feel particularly warm.

Tonight, skies will remain mostly clear with a low around 74F. Heat index values will continue to be elevated, reaching up to 97F. Winds will shift slightly to the south southeast, maintaining speeds of 10 to 20 mph. The high humidity will linger, keeping dew points elevated.

Tomorrow, temperatures will rise further, with a high near 95F and a low near 76F. The sky will be mostly sunny, and the chance of precipitation remains at 1%. However, the heat index is forecast to climb to as high as 107F, creating dangerous conditions. Winds will be from the south southeast at 10 to 15 mph. Residents are urged to stay hydrated, limit outdoor exertion during peak heat hours, and check on vulnerable neighbors. The advisory remains in effect until the specified end time, so continued vigilance is essential.

National Weather Service radar for North Texas (KFWS)
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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