Boone Lake Weather Forecast

    • 62
    • 86

    Partly Sunny

    • 63
    • 90

    Partly Sunny

    • 63
    • 91

    Mostly Sunny

    • 64
    • 92

    Chance Rain Showers

    • 65
    • 92

    Chance Thunderstorms

    • 66
    • 91

    Partly Sunny

    • 65
    • 90

    Chance Rain Showers

Today 14 Sep Sullivan

Sunny. Highs in the lower to mid 80s. Light Winds.

Tonight 14 Sep Sullivan

Partly cloudy. Lows in the lower 60s. Northeast Winds 10 Mph or less.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Boone Lake Temperature Statistics

September Temperature

Bristol / Johnson / Kingsport, Tri-City Regional Airport (2.5 miles)

  • Lowest 8 September, 2026

    58.6 °F

  • Average September

    77.3 °F

  • Highest 4 September, 2026

    97.6 °F

Climate (2021–2026)

Bristol / Johnson / Kingsport, Tri-City Regional Airport (2.5 miles)

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  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    70.3 °F
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