Glen Lyon Weather Forecast

    • 57
    • 64

    Cloudy

    • 38
    • 66

    Mostly Sunny

    • 51
    • 62

    Mostly Sunny

    • 51
    • 77

    Mostly Sunny

    • 50
    • 69

    Partly Sunny

    • 53
    • 71

    Partly Sunny

Today 17 Dec Collin

Cloudy. Highs in the lower 60s. South Winds 5 to 10 Mph.

Tonight 17 Dec Collin

Cloudy. A chance of drizzle in the Evening, then a slight chance of drizzle after midnight. Patchy fog. Lows in the upper 50s. South Winds 5 to 10 Mph, increasing to 10 to 15 Mph after midnight.

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Glen Lyon Temperature Statistics

December Temperature

Dallas / Addison Airport (3.7 miles)

  • Lowest 14 December, 2025

    28.4 °F

  • Average December

    45 °F

  • Highest 12 December, 2025

    69.8 °F

Climate (2020–Present)

Dallas / Addison Airport (3.7 miles)

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  • Average Low 2020–2025

    59.5 °F

  • Average 2020–2025

    67.2 °F

  • Average High 2020–2025

    77.8 °F
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