Preston Weather Forecast

    • 25
    • 44

    Mostly Sunny

    • 32
    • 56

    Mostly Sunny

    • 27
    • 42

    Partly Sunny

    • 44
    • 49

    Partly Sunny

    • 39
    • 55

    Mostly Cloudy

    • 41
    • 53

    Partly Sunny

    • 48
    • 58

    Mostly Cloudy

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 Forecast NOAA

  • Temperature Real-Time

Preston Temperature Statistics

January Temperature

Sherman/Denison, Grayson County Airport (11.2 miles)

  • Lowest 15 January, 2026

    23.4 °F

  • Average January

    50.2 °F

  • Highest 7 January, 2026

    77 °F

Climate (2021–Present)

Sherman/Denison, Grayson County Airport (11.2 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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