Loy Lake Weather Forecast

    • 79
    • 100

    Hot

    • 77
    • 99

    Hot

    • 76
    • 99

    Hot

    • 74
    • 98

    Hot

    • 74
    • 98

    Hot

    • 72
    • 95

    Partly Sunny

Today 15 Sep Grayson

Sunny, hot with Highs around 100. South Winds 5 to 10 Mph.

Tonight 15 Sep Grayson

Clear. Lows in the upper 70s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Loy Lake Temperature Statistics

September Temperature

Sherman/Denison, Grayson County Airport (4.3 miles)

  • Lowest 11 September, 2026

    71.1 °F

  • Average September

    85.4 °F

  • Highest 12 September, 2026

    102.2 °F

Climate (2021–2026)

Sherman/Denison, Grayson County Airport (4.3 miles)

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  • Average Low 2021–2026

    56 °F

  • Average 2021–2026

    64.8 °F

  • Average High 2021–2026

    77.3 °F
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