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5-day forecast / Van Alstyne, TX

TodayChance Showers And Thunderstorms90° / 76° 27%
WednesdayMostly Sunny92° / 76° 3%
ThursdayMostly Sunny93° / 76° 1%
FridayMostly Sunny95° / 77°
SaturdayMostly Sunny96° / 77°

Oppressive Humidity Grips Van Alstyne as Heat Index Climbs

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

Van Alstyne residents face muggy conditions with a dew point of 75F and heat index values reaching 101F today. A slight chance of storms lingers before clearing up tomorrow.

Marlene Ortiz

June 23, 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 is currently heavy and muggy, creating an oppressive atmosphere for those heading out this morning. The current air temperature sits at 79F, but the high moisture content makes it feel significantly warmer, with a feels-like temperature of 82F. Relative humidity is holding steady at 89%, while the dew point has reached 75F, indicating a very saturated air mass. Winds are blowing from the south at 8 mph, with gusts reaching up to 18 mph. The sky remains mostly cloudy, limiting direct sunlight but trapping heat near the surface.

Today and Tonight Forecast

Temperatures will rise throughout the day, with a high near 90F expected. The heat index is projected to climb as high as 101F, making it feel dangerously hot. There is a 27% chance of showers and thunderstorms today, with the National Weather Service noting that a chance of storms exists before 1pm. Any rainfall will likely be light, with new amounts less than a tenth of an inch possible. Winds will shift to the south at 5 to 10 mph.

As evening approaches, conditions will remain warm and humid. A slight chance of showers and thunderstorms is possible between 10pm and 1am, with precipitation chances at 20%. Rainfall totals could range between a tenth and a quarter of an inch. Temperatures will drop to a low near 76F, though they may rise to around 78F overnight. The heat index will remain elevated, with values as high as 99F. Skies will be partly cloudy with south southeast winds of 5 to 10 mph.

Tomorrow Outlook

The weather pattern begins to stabilize tomorrow. Skies will turn mostly sunny, offering a break from the cloud cover. Highs will reach near 92F, and the heat index will again hit 101F. Winds will come from the south southwest at around 10 mph. The chance of precipitation drops significantly to just 3%, signaling a drier day ahead. Overnight, skies will become mostly clear with a low around 76F and south winds near 10 mph. There are no active weather alerts in effect for this area.

Safety Reminder

Given the high heat index values and oppressive humidity, it is crucial to stay hydrated and limit midday exertion. Check on elderly neighbors or those without air conditioning to ensure they remain safe in the heat.

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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