Van Alstyne Weather Forecast

    • 69
    • 85

    Mostly Sunny

    • 54
    • 84

    Chance Thunderstorms

    • 54
    • 73

    Sunny

    • 60
    • 86

    Mostly Sunny

    • 56
    • 78

    Mostly Sunny

    • 62
    • 80

    Mostly Sunny

Today 17 Oct Grayson

Sunny. Highs in the mid 80s. South Winds 5 to 10 Mph.

Tonight 17 Oct Grayson

Mostly clear. A 20 percent chance of Showers and Thunderstorms after midnight. Lows in the upper 60s. South Winds 5 to 10 Mph, increasing to 10 to 15 Mph after midnight.

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Van Alstyne Temperature Statistics

October Temperature

McKinney - McKinney National Airport (16.8 miles)

  • Lowest 11 October, 2025

    57.9 °F

  • Average October

    75.4 °F

  • Highest 6 October, 2025

    91 °F

Climate (2020–Present)

McKinney - McKinney National Airport (16.8 miles)

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  • Average Low 2020–2025

    55.8 °F

  • Average 2020–2025

    66.5 °F

  • Average High 2020–2025

    77.4 °F
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