Thurso Bay Weather Forecast

    • 45
    • 59

    Decreasing Clouds

    • 48
    • 61

    Mostly Sunny

    • 48
    • 66

    Mostly Sunny

    • 49
    • 66

    Partly Sunny

    • 51
    • 66

    Partly Sunny

    • 52
    • 67

    Partly Sunny

    • 53
    • 67

    Partly Sunny

Today 21 Sep Jefferson

Mostly sunny. Highs around 70.

Tonight 21 Sep Jefferson

Mostly cloudy. Lows Ranging from the lower 40s across the tug hill to the mid 40s along the lake Ontario shore. Northeast Winds 5 to 10 Mph.

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  • Temperature Real-Time

Thurso Bay Temperature Statistics

September Temperature

Watertown, Watertown International Airport (21.1 miles)

  • Lowest 19 September, 2026

    37.9 °F

  • Average September

    63.6 °F

  • Highest 2 September, 2026

    83.6 °F

Climate (2021–2026)

Watertown, Watertown International Airport (21.1 miles)

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  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    57.6 °F
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