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5-day forecast / Van Alstyne, TX

MondaySunny99° / 78° 10%
TuesdaySunny102° / 81° 1%
WednesdaySunny102° / 79° 1%
ThursdaySunny98° / 78° 1%
FridaySunny99° / 81°

Van Alstyne Heat Index Hits 98F Tonight; 101F Expected Tomorrow - Jul 19, 8 PM

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

Van Alstyne faces a humid, hot evening with a heat index near 99F. Temperatures will climb to 101F tomorrow under sunny skies with no severe weather alerts.

Marlene Ortiz

July 20, 20262 min read

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

*As of Jul 19, 8 PM local time.*

Current Conditions and Heat Index

It is currently Sunday evening in Van Alstyne, TX, where the air temperature stands at 90F. However, the combination of heat and moisture makes it feel significantly warmer, with a feels-like temperature of 98F. The relative humidity is at 59%, supported by a dew point of 73F, indicating quite humid conditions.

Winds are blowing from the south at 7 mph, with gusts reaching up to 11 mph. The sky remains mostly cloudy as the day transitions into night.

Forecast for Tonight and Tomorrow

Tonight, there is a chance of showers and thunderstorms before 10pm. After that, skies will become mostly clear. The low will drop to around 77F, though temperatures may rise slightly to about 79F later in the night.

The heat index is expected to reach as high as 99F. Winds will shift to a south direction at around 5 mph, and the chance of precipitation is 30%.

Tomorrow, the weather will turn sunny with a high near 101F. This marks a significant increase in heat, with heat index values climbing as high as 107F. Winds will come from the southwest at around 5 mph.

The chance of precipitation drops to just 2%. Tomorrow night will be clear, with a low around 78F. Temperatures may rise to around 80F overnight, with heat index values reaching 106F.

South winds will remain around 5 mph.

Safety and Alerts

There are no active National Weather Service or NOAA weather alerts in effect for Van Alstyne at this time. However, the rising heat index values demand caution. Residents should stay hydrated and limit prolonged outdoor exertion during the peak heat hours.

As temperatures climb toward 101F tomorrow, checking on neighbors and ensuring pets have access to cool water is advisable. While the chance of storms is present tonight, the primary concern for the coming days is the intense heat and humidity.

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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