Jonesborough Weather Forecast

    • 57
    • 82

    Mostly Sunny

    • 58
    • 84

    Mostly Sunny

    • 58
    • 84

    Slight Chance Thunderstorms

    • 57
    • 83

    Partly Sunny

    • 59
    • 82

    Partly Sunny

    • 60
    • 81

    Slight Chance Thunderstorms

Today 18 Sep Washington

Patchy fog this morning. Sunny. Highs in the lower 80s. Light Winds.

Tonight 18 Sep Washington

Mostly clear. Areas of fog late. Lows in the upper 50s. Light Winds.

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  • Temperature Real-Time

Jonesborough Temperature Statistics

September Temperature

Bristol / Johnson / Kingsport, Tri-City Regional Airport (13 miles)

  • Lowest 8 September, 2025

    46 °F

  • Average September

    64.1 °F

  • Highest 15 September, 2025

    82.9 °F

Climate (2020–Present)

Bristol / Johnson / Kingsport, Tri-City Regional Airport (13 miles)

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  • Average Low 2020–2025

    46.7 °F

  • Average 2020–2025

    57.7 °F

  • Average High 2020–2025

    69.9 °F
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