Van Alstyne Weather Forecast

    • 56
    • 79

    Sunny

    • 59
    • 81

    Mostly Sunny

    • 58
    • 81

    Partly Sunny

    • 58
    • 81

    Partly Sunny

    • 57
    • 78

    Mostly Cloudy

    • 58
    • 77

    Partly Sunny

Today 21 Oct Grayson

Sunny. Highs in the upper 70s. East Winds around 5 Mph.

Tonight 21 Oct Grayson

Clear. Lows in the mid 50s. East Winds around 5 Mph in the Evening, becoming light and variable.

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Van Alstyne Temperature Statistics

October Temperature

McKinney - McKinney National Airport (16.8 miles)

  • Lowest 18 October, 2026

    45 °F

  • Average October

    72.7 °F

  • Highest 13 October, 2026

    93.7 °F

Climate (2021–2026)

McKinney - McKinney National Airport (16.8 miles)

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  • Average Low 2021–2026

    56.7 °F

  • Average 2021–2026

    67.6 °F

  • Average High 2021–2026

    78.6 °F
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