Lake Ontario Weather Forecast

    • 65
    • 72

    Decreasing Clouds

    • 63
    • 70

    Mostly Sunny

    • 62
    • 68

    Mostly Sunny

    • 63
    • 71

    Partly Sunny

    • 64
    • 68

    Chance Rain Showers

    • 67
    • 73

    Chance Rain Showers

Today 4 Sep Niagara

Partly to mostly sunny. Highs in the mid 70s. Light northwest Winds.

Tonight 4 Sep Niagara

Partly cloudy. Lows in the upper 50s. Light northwest Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Ontario Temperature Statistics

September Temperature

Niagara Falls, Niagara Falls International Airport (18 miles)

  • Lowest 2 September, 2026

    69.1 °F

  • Average September

    75.2 °F

  • Highest 1 September, 2026

    82 °F

Climate (2021–2026)

Niagara Falls, Niagara Falls International Airport (18 miles)

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  • Average Low 2021–2026

    42.9 °F

  • Average 2021–2026

    51.3 °F

  • Average High 2021–2026

    59.6 °F
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