Loy Lake Weather Forecast

    • 79
    • 101

    Hot

    • 79
    • 102

    Hot

    • 80
    • 101

    Hot

    • 79
    • 100

    Hot

    • 79
    • 101

    Hot

    • 74
    • 98

    Hot

    • 75
    • 95

    Mostly Sunny

Today 27 Jul Grayson

Sunny, hot with Highs around 100. South Winds 5 to 10 Mph. Heat index Values up to 108.

Tonight 27 Jul Grayson

Mostly 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

July Temperature

Sherman/Denison, Grayson County Airport (4.3 miles)

  • Lowest 5 July, 2026

    68 °F

  • Average July

    82.2 °F

  • Highest 21 July, 2026

    102.2 °F

Climate (2021–2026)

Sherman/Denison, Grayson County Airport (4.3 miles)

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  • Average Low 2021–2026

    55.9 °F

  • Average 2021–2026

    64.7 °F

  • Average High 2021–2026

    77 °F
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