Whitewright Weather Forecast

    • 70
    • 94

    Chance Thunderstorms

    • 70
    • 93

    Partly Sunny

    • 68
    • 92

    Partly Sunny

    • 66
    • 91

    Partly Sunny

    • 68
    • 91

    Mostly Cloudy

    • 71
    • 93

    Mostly Cloudy

Today 21 Sep Grayson

Mostly sunny with a slight chance of Showers. A slight chance of Thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent.

Tonight 21 Sep Grayson

Mostly clear. Lows around 70. Northeast Winds 5 to 10 Mph.

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Whitewright Temperature Statistics

September Temperature

Sherman/Denison, Grayson County Airport (21.1 miles)

  • Lowest 11 September, 2026

    71.1 °F

  • Average September

    85.8 °F

  • Highest 12 September, 2026

    102.2 °F

Climate (2021–2026)

Sherman/Denison, Grayson County Airport (21.1 miles)

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  • Average Low 2021–2026

    56.1 °F

  • Average 2021–2026

    64.9 °F

  • Average High 2021–2026

    77.3 °F
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