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5-day forecast / Van Alstyne, TX

TuesdaySunny100° / 79°
WednesdaySunny99° / 79°
ThursdayMostly Sunny100° / 80° 1%
FridayMostly Sunny101° / 80° 4%
SaturdaySunny98° / 73° 8%

Heat Advisory in Effect for Van Alstyne as Temperatures Climb to 100F - Jul 27, 4 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 100F and heat index values up to 106F. Current conditions are hot and humid.

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 27, 4 AM local time.*

Current Conditions and Alert Status

A Heat Advisory is currently in effect for Van Alstyne, Texas, signaling dangerous heat levels that require caution. The National Weather Service has issued this moderate-severity alert due to expected high temperatures and heat index values that will make it feel significantly hotter than the actual air temperature.

Right now, the air temperature stands at 79F, but the combination of heat and moisture makes it feel like 80F. The atmosphere is quite humid, with a dew point of 70F and relative humidity at 74%. Winds are light, blowing at 3 mph with gusts reaching up to 15 mph, under a clear sky.

Forecast for Today and Tomorrow

Today, Van Alstyne will experience mostly sunny skies with a high near 100F. The National Weather Service reports that heat index values could reach as high as 106F during the day. South southwest winds will pick up slightly, ranging from 5 to 10 mph. There is no chance of precipitation today.

Tonight, conditions will remain mostly clear. Temperatures will drop to a low around 78F, though they may rise to around 80F later in the night. Heat index values are expected to stay high, reaching up to 104F. South winds will continue at 5 to 10 mph.

Tomorrow, the heat will persist with sunny skies and a high near 100F. Heat index values will remain elevated, peaking around 104F. South southwest winds will maintain speeds of 5 to 10 mph.

No rain is expected. Temperatures will fall to a low near 79F overnight, potentially rising to 81F later in the night, with mostly clear skies and south winds of 5 to 10 mph.

Safety Reminders

Given the active Heat Advisory and the high heat index values, it is critical to stay cool and hydrated. Limit outdoor exertion, especially during the midday hours when the sun is strongest. Wear lightweight, light-colored clothing and seek air-conditioned environments whenever possible. Check on neighbors, particularly the elderly and those without air conditioning, to ensure their safety during this period of extreme heat.

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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