Smith Mountain Lake Weather Forecast

    • 70
    • 92

    Chance Thunderstorms

    • 67
    • 88

    Rain Showers Likely

    • 65
    • 80

    Mostly Cloudy

    • 66
    • 87

    Chance Rain Showers

    • 64
    • 83

    Rain Showers Likely

    • 63
    • 78

    Rain Showers Likely

Today 17 Sep Franklin

Sunny. A chance of Showers and Thunderstorms in the afternoon. Hot with Highs in the lower 90s. West Winds around 5 Mph. Chance of rain 50 percent.

Tonight 17 Sep Franklin

Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Humid with Lows in the upper 60s. West Winds around 5 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Smith Mountain Lake Temperature Statistics

September Temperature

Roanoke, Roanoke Regional Airport (24.9 miles)

  • Lowest 8 September, 2026

    59.6 °F

  • Average September

    79.9 °F

  • Highest 4 September, 2026

    98.7 °F

Climate (2021–2026)

Roanoke, Roanoke Regional Airport (24.9 miles)

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  • Average Low 2021–2026

    49.6 °F

  • Average 2021–2026

    59.5 °F

  • Average High 2021–2026

    70 °F
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