Sherman Weather Forecast

    • 74
    • 91

    Becoming Sunny

    • 73
    • 93

    Mostly Sunny

    • 72
    • 93

    Mostly Sunny

    • 73
    • 95

    Mostly Sunny

    • 72
    • 95

    Mostly Sunny

    • 68
    • 88

    Chance Rain Showers

    • 65
    • 85

    Chance Rain Showers

Today 20 Aug Grayson

Mostly sunny. Highs in the mid 90s. North Winds around 5 Mph. Heat index Values up to 106.

Tonight 20 Aug Grayson

Mostly clear. A 20 percent chance of Showers and Thunderstorms this evening. Lows in the mid 70s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sherman Temperature Statistics

August Temperature

Sherman/Denison, Grayson County Airport (6.2 miles)

  • Lowest 4 August, 2025

    67.1 °F

  • Average August

    82.2 °F

  • Highest 8 August, 2025

    98.6 °F

Climate (2020–Present)

Sherman/Denison, Grayson County Airport (6.2 miles)

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  • Average Low 2020–2025

    55.2 °F

  • Average 2020–2025

    63.9 °F

  • Average High 2020–2025

    76.1 °F
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