Frenchman Island Weather Forecast

    • 57
    • 77

    Decreasing Clouds

    • 58
    • 80

    Partly Sunny

    • 64
    • 83

    Partly Sunny

    • 68
    • 86

    Chance Thunderstorms

    • 69
    • 87

    Chance Thunderstorms

    • 67
    • 85

    Partly Sunny

Today 27 Jun Oswego

Some patchy fog Early, otherwise partly sunny this Morning, then becoming mostly sunny. Highs Ranging from the mid 70s along the lake Ontario shore to the upper 70s inland. Light Winds.

Tonight 27 Jun Oswego

Mainly clear in the Evening, then becoming partly cloudy. Lows in the upper 50s. Light north Winds.

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Frenchman Island Temperature Statistics

June Temperature

Syracuse, Syracuse Hancock International Airport (7.5 miles)

  • Lowest 1 June, 2026

    45.6 °F

  • Average June

    68.5 °F

  • Highest 11 June, 2026

    91.7 °F

Climate (2021–2026)

Syracuse, Syracuse Hancock International Airport (7.5 miles)

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  • Average Low 2021–2026

    42.7 °F

  • Average 2021–2026

    51.5 °F

  • Average High 2021–2026

    60.6 °F
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