Glen Lyon Weather Forecast

    • 68
    • 77

    Thunderstorms Likely

    • 69
    • 84

    Rain Showers Likely

    • 67
    • 83

    Thunderstorms Likely

    • 66
    • 82

    Rain Showers Likely

    • 67
    • 83

    Chance Thunderstorms

    • 69
    • 84

    Chance Thunderstorms

    • 69
    • 83

    Chance Thunderstorms

Today 21 May Collin

Cloudy with Showers and Thunderstorms likely. Highs in the mid 70s. East Winds around 5 Mph. Chance of rain 70 percent.

Tonight 21 May Collin

Mostly cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a slight chance of Showers after midnight. Patchy fog after midnight. Lows in the mid 60s. Northeast Winds around 5 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Glen Lyon Temperature Statistics

May Temperature

Dallas / Addison Airport (3.7 miles)

  • Lowest 2 May, 2026

    53.6 °F

  • Average May

    72.4 °F

  • Highest 14 May, 2026

    91.4 °F

Climate (2021–Present)

Dallas / Addison Airport (3.7 miles)

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  • Average Low 2021–2026

    60.1 °F

  • Average 2021–2026

    67.8 °F

  • Average High 2021–2026

    78.5 °F
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