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5-day forecast / Van Alstyne, TX

ThursdayChance Showers And Thunderstorms88° / 73° 36%
FridayMostly Sunny94° / 74° 13%
SaturdaySunny96° / 75° 2%
SundaySunny98° / 76° 4%
MondaySunny98° / 76° 3%

Van Alstyne Heat Index Hits 100 Today With Humid Skies - Sep 3, 2 PM

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

Temperatures in Van Alstyne are climbing toward 88 degrees with a heat index reaching 100. Humidity remains high, creating muggy conditions for the afternoon.

Marlene Ortiz

September 3, 20262 min read

National Weather Service radar for North Texas (KFWS)

*As of Sep 3, 2 PM local time.*

Current Conditions and Heat Stress

It is currently Thursday this afternoon in Van Alstyne, where the air temperature stands at 88F. The combination of heat and moisture is making it feel significantly warmer, with a feels-like temperature of 96F. Relative humidity is sitting at 62%, supported by a dew point of 73F, which contributes to the muggy atmosphere.

Winds are blowing from the south southeast at 15 mph, with gusts matching that speed. The sky remains partly cloudy as residents navigate this humid afternoon.

Forecast for Today and Tonight

Today, Van Alstyne will see a high near 88F. The National Weather Service indicates a chance of showers and thunderstorms, with precipitation chances listed at 36% in the local summary and up to 40% in the official forecast. Heat index values are expected to reach as high as 100 during the day.

Winds will continue from the south southeast at 10 to 15 mph, with gusts potentially reaching 25 mph.

As evening approaches tonight, there is a chance of showers and thunderstorms before 4am. The sky will be partly cloudy with a low near 73F. Temperatures may rise to around 75F overnight.

The heat index could remain as high as 99 during this period. Winds will ease slightly to 5 to 15 mph from the south southeast, with gusts up to 25 mph. New rainfall amounts less than a tenth of an inch are possible.

Tomorrow Outlook and Safety Tips

Tomorrow, conditions will shift to mostly sunny skies with a high near 94F. The heat index is forecast to climb to as high as 105, signaling intense heat stress. Winds will come from the south at 5 to 10 mph. The chance of precipitation drops to 13%, though new rainfall amounts less than a tenth of an inch remain possible.

Given the extreme heat and humidity, it is crucial to stay hydrated and limit midday exertion. Wear lightweight, light-colored clothing and seek air-conditioned environments when possible. Check on elderly neighbors or those without reliable cooling to ensure their safety during these high-stress conditions.

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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