Grayson County Airport Weather Forecast

    • 43
    • 77

    Mostly Sunny

    • 39
    • 65

    Partly Sunny

    • 34
    • 53

    Mostly Sunny

    • 31
    • 53

    Mostly Sunny

    • 39
    • 59

    Mostly Sunny

    • 43
    • 63

    Partly Sunny

    • 34
    • 60

    Mostly Sunny

Today 8 Jan Grayson

Sunny. Highs in the upper 70s. Southwest Winds 10 to 20 Mph with Gusts up to 30 Mph.

Tonight 8 Jan Grayson

Partly cloudy. Much cooler with Lows in the lower 40s. Southwest Winds 5 to 10 Mph, becoming north after midnight.

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Grayson County Airport Temperature Statistics

January Temperature

Sherman/Denison, Grayson County Airport (0 miles)

  • Lowest 4 January, 2026

    32.5 °F

  • Average January

    53.2 °F

  • Highest 6 January, 2026

    73.4 °F

Climate (2021–Present)

Sherman/Denison, Grayson County Airport (0 miles)

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  • Average Low 2021–2026

    55.5 °F

  • Average 2021–2026

    64.1 °F

  • Average High 2021–2026

    76.4 °F
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