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5-day forecast / Van Alstyne, TX

MondaySunny100° / 77°
TuesdaySunny100° / 80°
WednesdayMostly Sunny100° / 80° 1%
ThursdayMostly Sunny100° / 80° 2%
FridayMostly Sunny101° / 80° 4%

Heat Advisory in Effect for Van Alstyne as Temperatures Climb Toward 100 Degrees - Jul 26, 8 PM

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

A Heat Advisory is active for Van Alstyne, TX, with highs near 100F and heat indices reaching 104F. Residents are urged to stay cool and hydrated.

Marlene Ortiz

July 27, 20262 min read

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

*As of Jul 26, 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. The National Weather Service has issued this advisory to warn residents of dangerously warm conditions that will persist through the evening and into the next day.

As of this Sunday evening, the air temperature stands at 91F, with a feels-like temperature of 94F. The relative humidity is at 44%, and the dew point is recorded at 66F. Winds are blowing from the south at 9 mph, with gusts reaching up to 17 mph. The sky remains clear, offering no immediate relief from the daytime heat.

Forecast for Today, Tonight, and Tomorrow

Today, Van Alstyne is expected to see a high near 97F under mostly clear skies. There is a 0% chance of precipitation. Overnight lows will settle near 77F. According to the National Weather Service, temperatures may rise to around 79F during the night hours. Heat index values are forecast to reach as high as 98. South winds will persist at 5 to 10 mph.

Tomorrow, conditions will turn sunny with a high near 100F. The heat index is expected to climb to 104, making it feel significantly hotter than the actual air temperature. South southwest winds will average around 10 mph.

There remains a 0% chance of rain. Tomorrow night, skies will clear to mostly clear, with lows around 77F and temperatures rising to 79F overnight. Heat index values will remain elevated, peaking near 103.

South winds will continue at 5 to 10 mph.

Safety Reminders

Given the active Heat Advisory and the forecasted heat indices exceeding 100 degrees, it is critical to prioritize safety. Stay hydrated by drinking water frequently, even if you do not feel thirsty. Limit outdoor exertion, especially during the midday and afternoon hours when the sun is strongest.

Seek air-conditioned environments as much as possible. Check on elderly neighbors and those who may be vulnerable to heat-related illnesses. Never leave people or pets in parked vehicles, as interior temperatures can rise rapidly to dangerous levels.

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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