Frenchman Island Weather Forecast

    • 55
    • 69

    Mostly Cloudy

    • 57
    • 64

    Rain Showers

    • 57
    • 65

    Slight Chance Rain Showers

    • 56
    • 67

    Mostly Cloudy

    • 61
    • 72

    Mostly Cloudy

    • 61
    • 73

    Chance Rain Showers

    • 55
    • 70

    Slight Chance Rain Showers

Today 26 Sep Oswego

Mostly sunny. Highs in the upper 60s.

Tonight 26 Sep Oswego

Mostly cloudy. Lows in the lower 50s. North Winds 5 to 10 Mph, increasing to 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Frenchman Island Temperature Statistics

September Temperature

Syracuse, Syracuse Hancock International Airport (7.5 miles)

  • Lowest 24 September, 2026

    41 °F

  • Average September

    65.7 °F

  • Highest 2 September, 2026

    85.6 °F

Climate (2021–2026)

Syracuse, Syracuse Hancock International Airport (7.5 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    51.5 °F

  • Average High 2021–2026

    60.6 °F
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