Smith Mountain Lake Weather Forecast

    • 63
    • 85

    Chance Rain Showers

    • 67
    • 89

    Mostly Sunny

    • 63
    • 88

    Chance Thunderstorms

    • 56
    • 73

    Slight Chance Rain Showers

    • 54
    • 75

    Partly Sunny

    • 58
    • 75

    Mostly Cloudy

Today 4 Sep Franklin

Mostly sunny. A chance of Showers with a slight chance of Thunderstorms in the afternoon. Highs in the mid 80s. Southwest Winds 10 to 15 Mph. Chance of rain 50 percent.

Tonight 4 Sep Franklin

Partly cloudy with a chance of Showers in the Evening, then mostly clear after midnight. Humid with Lows in the lower 60s. Southwest Winds 5 to 10 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 1 September, 2025

    53.1 °F

  • Average September

    64.6 °F

  • Highest 1 September, 2025

    75.9 °F

Climate (2020–Present)

Roanoke, Roanoke Regional Airport (24.9 miles)

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  • Average Low 2020–2025

    49.8 °F

  • Average 2020–2025

    59.5 °F

  • Average High 2020–2025

    69.8 °F
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