Hannibal Weather Forecast

    • 43
    • 66

    Becoming Sunny

    • 47
    • 68

    Mostly Sunny

    • 59
    • 77

    Chance Rain Showers

    • 59
    • 78

    Chance Rain Showers

    • 58
    • 76

    Chance Rain Showers

    • 56
    • 74

    Chance Rain Showers

Today 19 Sep Oswego

Sunny, cooler with Highs Ranging from the lower 60s on the tug hill to the mid 60s across the lower Elevations. North Winds 10 Mph or Less, becoming northwest.

Tonight 19 Sep Oswego

Mainly clear with patchy frost developing overnight. Chilly with Lows Ranging from around 40 across the tug hill to the mid 40s along the lake Ontario shore. Light Winds.

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Hannibal Temperature Statistics

September Temperature

Fulton, Oswego County Airport (9.3 miles)

  • Lowest 9 September, 2025

    44.1 °F

  • Average September

    61.2 °F

  • Highest 3 September, 2025

    80.1 °F

Climate (2020–Present)

Fulton, Oswego County Airport (9.3 miles)

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  • Average Low 2020–2025

    41.1 °F

  • Average 2020–2025

    49.7 °F

  • Average High 2020–2025

    58.4 °F
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