Van Alstyne Weather Forecast

    • 20
    • 44

    Partly Sunny

    • 30
    • 56

    Mostly Sunny

    • 25
    • 46

    Partly Sunny

    • 42
    • 51

    Mostly Cloudy

    • 38
    • 58

    Partly Sunny

Today 17 Jan Grayson

Partly sunny. Cooler with Highs in the mid 40s. Northwest Winds 5 to 10 Mph.

Tonight 17 Jan Grayson

Mostly clear. Colder with Lows around 20. North Winds 5 to 10 Mph.

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  • Temperature Real-Time

Van Alstyne Temperature Statistics

January Temperature

McKinney - McKinney National Airport (16.8 miles)

  • Lowest 15 January, 2026

    28 °F

  • Average January

    53.5 °F

  • Highest 8 January, 2026

    78.1 °F

Climate (2021–Present)

McKinney - McKinney National Airport (16.8 miles)

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  • Average Low 2021–2026

    56.1 °F

  • Average 2021–2026

    66.8 °F

  • Average High 2021–2026

    77.7 °F
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