Grayson County Airport Weather Forecast

    • 40
    • 53

    Mostly Cloudy

    • 24
    • 44

    Wintry Mix

    • 11
    • 25

    Wintry Mix

    • 2
    • 19

    Chance Snow/Sleet

    • 13
    • 28

    Mostly Sunny

    • 24
    • 40

    Partly Sunny

    • 21
    • 41

    Partly Sunny

Today 22 Jan Grayson

Mostly cloudy. Highs in the mid 50s. Southeast Winds around 5 Mph.

Tonight 22 Jan Grayson

Mostly cloudy. A 20 percent chance of Showers after midnight. Lows in the lower 40s. East Winds 5 to 10 Mph.

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  • Temperature Real-Time

Grayson County Airport Temperature Statistics

January Temperature

Sherman/Denison, Grayson County Airport (0 miles)

  • Lowest 18 January, 2026

    14 °F

  • Average January

    46.9 °F

  • Highest 7 January, 2026

    77 °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

    64.2 °F

  • Average High 2021–2026

    76.4 °F
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