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5-day forecast / Van Alstyne, TX

MondaySunny99° / 78° 7%
TuesdaySunny then Slight Chance Showers And Thunderstorms99° / 77° 10%
WednesdaySunny99° / 77° 7%
ThursdaySunny97° / 76° 13%
FridaySunny97° / 76° 11%

Heat Advisory in Effect for Van Alstyne as Temperatures Soar - Sep 7, 2 PM

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

A Heat Advisory is active for Van Alstyne, TX, with heat index values reaching 106F. Residents are urged to take precautions against dangerous heat conditions today and tomorrow.

Marlene Ortiz

September 7, 20262 min read

National Weather Service radar for North Texas (KFWS)

*As of Sep 7, 2 PM local time.*

Dangerous Heat Conditions Underway

Van Alstyne, TX, is currently under an active Heat Advisory issued by the National Weather Service in Fort Worth. This moderate-severity alert remains in effect until September 8 at 8:00PM CDT, signaling a period of potentially hazardous heat for the region.

Current conditions reflect the intensity of this event. The air temperature stands at 99F, but the combination of heat and moisture makes it feel significantly hotter. The current feels-like temperature is 106F.

Relative humidity is at 40%, with a dew point of 70F, indicating substantial moisture in the air that hinders cooling. Winds are blowing from the south southeast at 11 mph, with gusts reaching 14 mph, under a clear sky.

Forecast for Today and Tomorrow

Today remains sunny with a high near 99F. The National Weather Service forecasts heat index values as high as 105. There is only a 7% chance of precipitation. Tonight will be mostly clear, with a low around 78F. Temperatures may rise to around 80F overnight, keeping the heat index as high as 101. Winds will persist from the south southeast at 5 to 10 mph.

Tomorrow brings similar warmth, with a high near 99F and sunny skies initially. The heat index is expected to reach 105. A slight chance of showers and thunderstorms develops after 4pm. Overnight lows drop to around 77F, though temperatures may rise to 79F later in the night. The heat index remains as high as 102 during this period.

Safety Reminders

Given the active Heat Advisory and feels-like temperatures exceeding 105F, residents should prioritize safety. Hydrate frequently and limit midday exertion when the sun is at its peak. Check on elderly neighbors or those without air conditioning to ensure they remain safe in the heat. Avoid prolonged exposure to direct sunlight 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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