Glen Lyon Weather Forecast

    • 79
    • 101

    Hot

    • 80
    • 102

    Hot

    • 80
    • 102

    Hot

    • 81
    • 101

    Hot

    • 81
    • 100

    Hot

    • 81
    • 101

    Hot

Today 28 Aug Collin

Sunny, hot with Highs around 100. Northeast Winds around 5 Mph. Heat index Values up to 105.

Tonight 28 Aug Collin

Mostly clear. Lows in the mid 70s. East Winds around 5 Mph.

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Glen Lyon Temperature Statistics

August Temperature

Dallas / Addison Airport (3.7 miles)

  • Lowest 2 August, 2026

    77 °F

  • Average August

    90.7 °F

  • Highest 23 August, 2026

    107.6 °F

Climate (2021–2026)

Dallas / Addison Airport (3.7 miles)

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  • Average Low 2021–2026

    60.3 °F

  • Average 2021–2026

    68.1 °F

  • Average High 2021–2026

    78.8 °F
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