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5-day forecast / Van Alstyne, TX

WednesdaySunny100° / 78° 2%
ThursdaySunny98° / 77° 1%
FridaySunny98° / 77° 1%
SaturdaySunny97° / 77° 1%
SundaySunny97° / 77° 1%

Humidity Peaks in Van Alstyne as Heat Index Nears 103 - Jun 21, 4 AM

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

Van Alstyne residents face high humidity with a dew point of 72F today. Temperatures will climb near 91F with a heat index up to 102. Showers possible tomorrow.

Marlene Ortiz

June 21, 20262 min read

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

As of Jun 21, 4 AM local time.

Current Conditions and Humidity

It is currently Sunday overnight in Van Alstyne, TX, and the air remains quite heavy with moisture. The current air temperature sits at 75F, but the feels-like temperature is 77F due to the high relative humidity of 89%. The dew point is recorded at 72F, indicating a muggy atmosphere.

Winds are blowing from the south at 10 mph, with gusts reaching up to 28 mph. Despite the moisture in the air, the sky remains clear at this hour.

Today and Tonight Forecast

Today, the sun will dominate the sky with mostly sunny conditions expected. Highs will reach near 91F. However, the combination of heat and humidity will push heat index values as high as 102. South winds will continue at 10 to 15 mph, with gusts as high as 25 mph. The chance of precipitation is very low at just 2%.

As tonight approaches, skies will turn partly cloudy. A low around 74 is expected initially, but temperatures may rise to around 79 overnight. The heat index could reach 101 during this period.

There is a slight chance of showers and thunderstorms after 4am, with a 20% chance of precipitation. Any rainfall amounts would likely be less than a tenth of an inch. South winds will persist at 10 to 15 mph with gusts up to 25 mph.

Tomorrow Outlook

Tomorrow brings a slight increase in the chance for rain. A chance of showers and thunderstorms is expected before 10am, followed by another chance between 10am and 1pm, before a slight chance remains later. Skies will be partly sunny with highs near 92F.

Temperatures may fall to around 90 in the afternoon. The heat index could climb as high as 103. South winds will remain steady at 10 to 15 mph.

The chance of precipitation is 30%, with new rainfall amounts between a tenth and quarter of an inch possible.

Safety Reminder

With heat index values nearing 103, it is important to stay hydrated and limit midday exertion. Check on neighbors who may be vulnerable to the heat. While no active weather alerts are in effect, the high humidity and potential for storms require attention.

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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