North Bay Weather Forecast

    • 53
    • 73

    Decreasing Clouds

    • 55
    • 70

    Mostly Sunny

    • 65
    • 77

    Chance Rain Showers

    • 52
    • 76

    Slight Chance Thunderstorms

    • 52
    • 64

    Chance Rain Showers

    • 58
    • 70

    Rain Showers Likely

    • 55
    • 68

    Mostly Cloudy

Today 10 Sep Jefferson

Mostly sunny. Highs Ranging from the upper 60s on the tug hill to the lower 70s across the lower Elevations. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 10 Sep Jefferson

Mostly cloudy this Evening, then clearing. Some patchy fog developing late. Lows Ranging from the upper 40s across the tug hill to the lower 50s along the lake Ontario shore. West Winds 10 to 15 Mph, becoming light.

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North Bay Temperature Statistics

September Temperature

Watertown, Watertown International Airport (18.6 miles)

  • Lowest 7 September, 2026

    47.6 °F

  • Average September

    66.8 °F

  • Highest 2 September, 2026

    83.6 °F

Climate (2021–2026)

Watertown, Watertown International Airport (18.6 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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