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5-day forecast / Van Alstyne, TX

TodayMostly Sunny90° / 73° 1%
ThursdayMostly Sunny95° / 76° 1%
FridayChance Showers And Thunderstorms90° / 75° 53%
SaturdayShowers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms90° / 76° 58%
SundayMostly Sunny95° / 78° 6%

Humidity Clings to Van Alstyne as Temperatures Climb Toward 91

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

A dew point of 72F keeps the air thick in Van Alstyne today. Highs near 88F give way to 91F tomorrow with heat indices reaching 100.

Marlene Ortiz

June 12, 20262 min read

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

Current Conditions and Humidity

The air in Van Alstyne feels heavy this afternoon, with a dew point of 72F creating a muggy atmosphere. Relative humidity sits at 74%, making the current air temperature of 81F feel like 85F. Winds are picking up, blowing at 14 mph with gusts reaching 28 mph, while the sky remains partly cloudy.

Today and Tonight Forecast

Temperatures will rise to a high near 88F today. Despite the afternoon warmth, conditions will cool slightly to around 83F later in the day. The sky will stay partly sunny with a low chance of precipitation at 8%. Winds will shift to a south southeast direction, blowing between 5 to 10 mph.

As evening sets in, the sky will become mostly cloudy. Temperatures will drop to a low around 76F, though they may rise slightly to about 78F during the overnight hours. The south southeast wind will continue at 5 to 10 mph, maintaining the humid feel.

Tomorrow Outlook

Expect a warmer and more humid day tomorrow. The high will reach near 91F under mostly sunny skies. With a south wind of 10 to 15 mph, heat index values are expected to climb as high as 100. The chance of precipitation is minimal at 5%.

Looking ahead to tomorrow night, a chance of showers and thunderstorms develops after 4am. The sky will be partly cloudy with a low around 76F. Temperatures may rise to around 78F overnight. The south wind will persist at 10 to 15 mph, with a 30% chance of precipitation. Any new rainfall amounts will likely be less than a tenth of an inch.

Safety Reminder

With heat indices approaching 100 tomorrow, it is important to stay hydrated and limit strenuous outdoor activities during the hottest parts of the day. Check on neighbors and elderly relatives who may be more vulnerable to the heat. While there are no active weather alerts, remain aware of changing conditions as humidity levels stay high.

National Weather Service radar for North Texas (KFWS)
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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