Lewisville Dam Weather Forecast

    • 81
    • 100

    Sunny

    • 81
    • 100

    Hot

    • 81
    • 100

    Hot

    • 81
    • 98

    Hot

    • 81
    • 98

    Hot

    • 80
    • 97

    Hot

Today 12 Sep Denton

Sunny, hot with Highs around 101. South Winds 5 to 10 Mph. Heat index Values up to 108 this afternoon.

Tonight 12 Sep Denton

Mostly clear. Lows in the upper 70s. South Winds 5 to 10 Mph.

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  • Temperature Real-Time

Lewisville Dam Temperature Statistics

September Temperature

Dallas / Addison Airport (9.9 miles)

  • Lowest 4 September, 2026

    78.8 °F

  • Average September

    88.2 °F

  • Highest 1 September, 2026

    100.4 °F

Climate (2021–2026)

Dallas / Addison Airport (9.9 miles)

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  • Average Low 2021–2026

    60.4 °F

  • Average 2021–2026

    68.2 °F

  • Average High 2021–2026

    78.8 °F
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