Lewisville Lake Weather Forecast

    • 74
    • 91

    Mostly Sunny

    • 74
    • 92

    Mostly Sunny

    • 72
    • 91

    Chance Thunderstorms

    • 73
    • 88

    Chance Rain Showers

    • 75
    • 89

    Partly Sunny

    • 73
    • 90

    Chance Rain Showers

    • 71
    • 86

    Chance Rain Showers

Today 16 Sep Denton

Sunny with a 20 percent chance of Showers and Thunderstorms. Highs in the lower 90s. South Winds around 5 Mph.

Tonight 16 Sep Denton

Mostly clear. A slight chance of Showers and Thunderstorms in the evening. Lows in the lower 70s. South Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lewisville Lake Temperature Statistics

September Temperature

Dallas / Addison Airport (11.8 miles)

  • Lowest 6 September, 2025

    64.4 °F

  • Average September

    78.8 °F

  • Highest 4 September, 2025

    102.2 °F

Climate (2020–Present)

Dallas / Addison Airport (11.8 miles)

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  • Average Low 2020–2025

    59.3 °F

  • Average 2020–2025

    66.9 °F

  • Average High 2020–2025

    77.5 °F
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