Sullivan Weather Forecast

    • 52
    • 76

    Increasing Clouds

    • 52
    • 72

    Chance Rain Showers

    • 50
    • 75

    Partly Sunny

    • 54
    • 77

    Mostly Cloudy

    • 52
    • 74

    Rain Showers Likely

    • 52
    • 75

    Chance Rain Showers

Today 20 Jun Jefferson

Sunny. Highs in the mid 70s. Northwest Winds 10 to 15 Mph.

Tonight 20 Jun Jefferson

Mostly clear. Lows in the mid 50s. West Winds 5 to 10 Mph.

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Sullivan Temperature Statistics

June Temperature

Watertown (12.4 miles)

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Climate (2021–2026)

Watertown (12.4 miles)

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  • Average Low 2021–2026

    35.2 °F

  • Average 2021–2026

    44.9 °F

  • Average High 2021–2026

    54 °F
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