Preston Weather Forecast

    • 75
    • 87

    Mostly Cloudy

    • 75
    • 89

    Chance Thunderstorms

    • 68
    • 81

    Rain Showers Likely

    • 66
    • 77

    Chance Rain Showers

    • 73
    • 83

    Mostly Sunny

    • 79
    • 89

    Mostly Sunny

    • 78
    • 91

    Chance Thunderstorms

Today 12 Jun Grayson

Partly sunny with a 30 percent chance of Showers and Thunderstorms. Highs in the upper 80s. South Winds around 5 Mph.

Tonight 12 Jun Grayson

Partly cloudy in the Evening, then becoming mostly cloudy. Humid with Lows in the mid 70s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Preston Temperature Statistics

June Temperature

Sherman/Denison, Grayson County Airport (11.2 miles)

  • Lowest 6 June, 2026

    68 °F

  • Average June

    78.3 °F

  • Highest 1 June, 2026

    93.2 °F

Climate (2021–Present)

Sherman/Denison, Grayson County Airport (11.2 miles)

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  • Average Low 2021–2026

    55.9 °F

  • Average 2021–2026

    64.6 °F

  • Average High 2021–2026

    77 °F
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