Lake Ontario Weather Forecast

    • 56
    • 62

    Partly Sunny

    • 55
    • 70

    Rain Showers

    • 49
    • 57

    Rain Showers

    • 50
    • 59

    Rain Showers

    • 48
    • 53

    Rain Showers

    • 47
    • 52

    Rain Showers Likely

Today 18 Oct Oswego

Mostly cloudy Early, then becoming partly sunny. Highs Ranging from around 60 on the tug hill to the mid 60s across the lower Elevations. Southeast Winds 10 Mph or less.

Tonight 18 Oct Oswego

Partly cloudy and mild with Lows in the lower 50s. Southeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Ontario Temperature Statistics

October Temperature

Fulton, Oswego County Airport (18 miles)

  • Lowest 10 October, 2025

    30.9 °F

  • Average October

    54.5 °F

  • Highest 5 October, 2025

    82.9 °F

Climate (2020–Present)

Fulton, Oswego County Airport (18 miles)

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  • Average Low 2020–2025

    41.2 °F

  • Average 2020–2025

    49.8 °F

  • Average High 2020–2025

    58.4 °F
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