Hannibal Weather Forecast

    • 48
    • 71

    Chance Rain Showers

    • 48
    • 63

    Mostly Sunny

    • 51
    • 71

    Partly Sunny

    • 51
    • 69

    Mostly Sunny

    • 52
    • 70

    Partly Sunny

    • 53
    • 71

    Mostly Sunny

    • 58
    • 76

    Partly Sunny

Today 29 May Oswego

Cloudy. A chance of Showers late. Highs Ranging from the lower 60s on the tug hill to the upper 60s across the lower Elevations. West Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 40 percent.

Tonight 29 May Oswego

Mostly cloudy. A chance of Showers early. Breezy with Lows Ranging from the mid 40s across the tug hill to the upper 40s along the lake Ontario shore. Northwest Winds 10 to 20 Mph with Gusts up to 30 Mph. Chance of rain 50 percent.

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Hannibal Temperature Statistics

May Temperature

Fulton, Oswego County Airport (9.3 miles)

  • Lowest 12 May, 2026

    28.9 °F

  • Average May

    53.6 °F

  • Highest 18 May, 2026

    89.1 °F

Climate (2021–Present)

Fulton, Oswego County Airport (9.3 miles)

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  • Average Low 2021–2026

    40.8 °F

  • Average 2021–2026

    49.4 °F

  • Average High 2021–2026

    58 °F
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