Lake Ontario Weather Forecast

    • 52
    • 74

    Becoming Sunny

    • 56
    • 71

    Mostly Cloudy

    • 48
    • 70

    Slight Chance Rain Showers

    • 50
    • 69

    Mostly Cloudy

    • 44
    • 66

    Rain Showers Likely

    • 41
    • 61

    Slight Chance Rain Showers

Today 24 Sep Wells

Mostly cloudy in the morning then clearing. Highs in the mid 70s. Northwest Winds around 5 Mph.

Tonight 24 Sep Wells

Increasing Clouds. Lows in the lower 50s. Southeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Ontario Temperature Statistics

September Temperature

Harvey Municipal Airport (21.1 miles)

  • Lowest 13 September, 2026

    35.6 °F

  • Average September

    61.4 °F

  • Highest 4 September, 2026

    84.2 °F

Climate (2021–2026)

Harvey Municipal Airport (21.1 miles)

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  • Average Low 2021–2026

    30.4 °F

  • Average 2021–2026

    41.2 °F

  • Average High 2021–2026

    51.8 °F
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