Back to Weather

5-day forecast / Van Alstyne, TX

TuesdaySunny102° / 81° 1%
WednesdaySunny100° / 77°
ThursdaySunny97° / 77° 1%
FridaySunny99° / 81° 1%
SaturdayMostly Sunny99° / 81° 7%

Extreme Heat Warning in Effect for Van Alstyne as Temperatures Soar - Jul 21, 4 AM

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

An Extreme Heat Warning is active for Van Alstyne, TX, with highs near 102F and heat index values reaching 110F. Current conditions are hot and humid.

Marlene Ortiz

July 21, 20262 min read

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

*As of Jul 21, 4 AM local time.*

Current Conditions and Alert Status

An Extreme Heat Warning is currently in effect for Van Alstyne, Texas. This severe alert, issued by the National Weather Service, highlights dangerous heat conditions that pose significant risks to health and safety. Residents should take immediate precautions to stay cool and hydrated.

It is currently Tuesday overnight in Van Alstyne. The air temperature stands at 77F, with a feels-like temperature of 78F. Humidity levels are quite high, with relative humidity at 78% and a dew point of 70F. Winds are currently calm at 0 mph, though gusts have reached up to 14 mph. The sky remains clear, offering no relief from the lingering warmth of the day.

Forecast for Today and Tomorrow

Today, the sun will dominate the sky with sunny conditions. Highs will reach near 102F, creating a dangerous heat index value as high as 110F. Winds will be light, blowing from the west at 0 to 5 mph.

The chance of precipitation is minimal at just 1%. As the day transitions into tonight, skies will remain clear. Temperatures will drop to a low around 78F, but will rise to around 80F later in the night.

Winds will shift to the southwest at around 5 mph.

Tomorrow, the heat will persist with sunny skies and a high near 100F. The heat index is expected to climb to 109F. Winds will pick up slightly from the north northeast at 5 to 10 mph.

The chance of rain is 0%. Overnight into tomorrow night, conditions will become mostly clear with a low around 77F, rising to around 79F later. Winds will continue from the east northeast at 5 to 10 mph.

Safety Reminders

Given the severe heat warning and high humidity, it is critical to limit outdoor exertion during the hottest parts of the day. Stay hydrated by drinking plenty of water, even if you do not feel thirsty. Seek air-conditioned environments whenever possible and check on elderly neighbors or those without reliable cooling.

Never leave people or pets in parked vehicles, as interior temperatures can rise rapidly to life-threatening levels.

National Weather Service radar for North Texas (KFWS)

Sources

https://radar.weather.gov

https://api.weather.gov

https://open-meteo.com

Share

Marlene Ortiz

Marlene Ortiz covers weather, storms, and seasonal life across Van Alstyne and Grayson County.

Related Stories

More in Sport