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5-day forecast / Van Alstyne, TX

SaturdayMostly Sunny94° / 76° 2%
SundaySunny95° / 77° 2%
MondaySunny98° / 78°
TuesdaySunny100° / 79°
WednesdaySunny100° / 79° 1%

Humidity Clings to Van Alstyne as Temps Climb Toward 95 - Jul 18, 4 AM

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

Current dew points sit at 72F with 74% relative humidity. Highs near 94 today and 95 tomorrow bring heat indices up to 102. No alerts are active.

Marlene Ortiz

July 18, 20262 min read

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

*As of Jul 18, 4 AM local time.*

Current Conditions and Humidity

It is currently Saturday overnight in Van Alstyne, and the air remains thick with moisture. The current air temperature is 81F, but the heat index makes it feel like 85F. Relative humidity is holding at 74%, with a dew point of 72F indicating significant stickiness in the atmosphere.

Winds are blowing from the south at 10 mph, with gusts reaching up to 16 mph. Above, the sky is clear, offering no relief from the lingering warmth of the day.

Forecast for Today and Tomorrow

The heat will intensify as the week progresses. Today, skies will be mostly sunny with a high near 94F. The National Weather Service indicates that heat index values will climb as high as 99 during the day.

South southwest winds will remain around 10 mph. The chance of precipitation is minimal at just 2%. Temperatures will drop to a low near 75F tonight, though the official forecast notes lows around 76 with temperatures rising to around 78 overnight due to the humidity.

Partly cloudy skies are expected tonight with south southwest winds of 5 to 10 mph.

Tomorrow, conditions will remain sunny with a high near 95F. The heat index is expected to reach as high as 102, making it feel significantly hotter than the actual air temperature. South southwest winds will persist at 5 to 10 mph.

The chance of rain remains low at 2%. Temperatures will fall to a low near 77F tomorrow night under clear skies, with south winds of 5 to 10 mph.

Safety Reminder

With heat indices approaching 102, it is crucial to stay hydrated and limit midday exertion. Check on elderly neighbors and ensure pets have access to cool water and shade. The combination of high temperatures and humidity can lead to heat-related illnesses quickly, so seek air-conditioned environments during the peak heat hours.

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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