Lake Ontario Weather Forecast

    • 59
    • 83

    Slight Chance Thunderstorms

    • 55
    • 81

    Mostly Sunny

    • 52
    • 82

    Mostly Sunny

    • 55
    • 78

    Partly Sunny

    • 60
    • 80

    Chance Rain Showers

    • 58
    • 85

    Mostly Sunny

Today 19 Aug Wells

Mostly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Highs in the lower 80s. South Winds 10 to 15 Mph. Chance of rain 20 percent.

Tonight 19 Aug Wells

Mostly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Lows in the upper 50s. Southeast Winds around 10 Mph, becoming southwest after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Ontario Temperature Statistics

August Temperature

Harvey Municipal Airport (21.1 miles)

  • Lowest 5 August, 2026

    42.8 °F

  • Average August

    67.6 °F

  • Highest 2 August, 2026

    98.6 °F

Climate (2021–2026)

Harvey Municipal Airport (21.1 miles)

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  • Average Low 2021–2026

    30.3 °F

  • Average 2021–2026

    41.1 °F

  • Average High 2021–2026

    51.8 °F
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