Sullivan Weather Forecast

    • 64
    • 94

    Chance Thunderstorms

    • 60
    • 84

    Chance Thunderstorms

    • 64
    • 86

    Chance Rain Showers

    • 64
    • 84

    Chance Thunderstorms

    • 63
    • 82

    Chance Thunderstorms

    • 61
    • 83

    Chance Thunderstorms

Today 18 Sep Franklin

Mostly sunny. A slight chance of Showers and Thunderstorms this afternoon. Highs in the mid 90s. South Winds around 5 Mph. Chance of rain 20 percent.

Tonight 18 Sep Franklin

Mostly cloudy with a chance of Showers and Thunderstorms. Lows in the lower 60s. West Winds around 5 Mph. Chance of rain 50 percent.

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Sullivan Temperature Statistics

September Temperature

Washington Regional Airport (27.3 miles)

  • Lowest 8 September, 2025

    42.8 °F

  • Average September

    69.7 °F

  • Highest 14 September, 2025

    98.6 °F

Climate (2020–Present)

Washington Regional Airport (27.3 miles)

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  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    57.9 °F

  • Average High 2020–2025

    68.7 °F
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