Sullivan Regional Airport Weather Forecast

    • 65
    • 83

    Mostly Sunny

    • 71
    • 87

    Mostly Cloudy

    • 63
    • 82

    Rain Showers Likely

    • 56
    • 69

    Chance Rain Showers

    • 56
    • 70

    Chance Rain Showers

    • 51
    • 69

    Slight Chance Thunderstorms

Today 29 Sep Franklin

Sunny. Highs in the lower 80s. South Winds around 5 Mph.

Tonight 29 Sep Franklin

Partly cloudy. Not as cool with Lows in the mid 60s. Southeast Winds around 5 Mph.

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Sullivan Regional Airport Temperature Statistics

September Temperature

Washington Regional Airport (26.1 miles)

  • Lowest 25 September, 2026

    53.6 °F

  • Average September

    77.6 °F

  • Highest 5 September, 2026

    102.2 °F

Climate (2021–2026)

Washington Regional Airport (26.1 miles)

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  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    58.6 °F

  • Average High 2021–2026

    69.7 °F
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