Sackets Harbor Weather Forecast

    • 47
    • 67

    Mostly Sunny

    • 47
    • 66

    Sunny

    • 50
    • 68

    Partly Sunny

    • 51
    • 67

    Partly Sunny

    • 49
    • 67

    Partly Sunny

    • 50
    • 67

    Mostly Sunny

    • 55
    • 69

    Mostly Sunny

Today 23 Sep Jefferson

Mostly sunny. Highs in the lower 70s.

Tonight 23 Sep Jefferson

Clear. Lows Ranging from around 40 across the tug hill to the mid 40s along the lake Ontario shore. Northeast Winds 5 to 10 Mph, becoming light.

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Sackets Harbor Temperature Statistics

September Temperature

Watertown, Watertown International Airport (5.6 miles)

  • Lowest 19 September, 2026

    38.6 °F

  • Average September

    62.6 °F

  • Highest 2 September, 2026

    83.6 °F

Climate (2021–2026)

Watertown, Watertown International Airport (5.6 miles)

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  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    57.5 °F
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