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5-day forecast / Van Alstyne, TX

MondaySunny103° / 78° 2%
TuesdaySunny101° / 79°
WednesdaySunny101° / 78° 1%
ThursdaySunny101° / 77° 7%
FridaySunny99° / 75° 7%

Heat Advisory in Effect for Van Alstyne as Temperatures Climb Near 100 - Aug 11, 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 98F today and heat index values reaching 104F. Humidity remains high with a dew point of 70F.

Marlene Ortiz

August 11, 20262 min read

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

*As of Aug 11, 4 AM local time.*

Current Conditions and Alert Overview

Van Alstyne, TX, is currently under an active Heat Advisory issued by the National Weather Service in Fort Worth. This moderate-severity alert, which carries expected urgency, is in place due to dangerously high temperatures and heat index values that will make conditions feel significantly hotter than the actual air temperature. The advisory remains in effect through the evening of tomorrow.

As of this Tuesday overnight, the air temperature stands at 79F, with a feels-like reading of 80F. Relative humidity is sitting at 74%, and the dew point is recorded at 70F, indicating quite humid conditions. The sky is clear, and winds are blowing from the south at 9 mph, with gusts reaching up to 21 mph.

Forecast for Today and Tomorrow

Today, Van Alstyne will experience sunny skies with a high near 98F and a low near 77F. There is no chance of precipitation. The National Weather Service forecasts heat index values as high as 104F during the day. Winds will be from the south southwest around 10 mph.

Tonight, conditions will remain clear with a low around 78F. Temperatures are expected to rise to around 80F overnight. Heat index values may reach as high as 102F. South winds will increase slightly to 10 to 15 mph.

Tomorrow, the heat will persist with sunny skies and a high near 99F. The heat index is forecast to hit 103F. Winds will continue from the south at 10 to 15 mph, with gusts as high as 25 mph.

Tomorrow night will also be clear, with a low around 78F and temperatures rising to around 80F overnight. South winds will maintain speeds of 10 to 15 mph, with gusts up to 25 mph.

Safety Reminder

Given the active Heat Advisory and high heat index values, it is crucial to stay hydrated and limit outdoor exertion during the hottest parts of the day. Check on neighbors and vulnerable individuals who may be at risk from extreme heat. Ensure pets have access to cool water and shade.

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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