Mentor Harbor Weather Forecast

    • 73
    • 80

    Chance Thunderstorms

    • 71
    • 79

    Rain Showers

    • 69
    • 78

    Rain Showers Likely

    • 68
    • 79

    Chance Thunderstorms

    • 66
    • 77

    Slight Chance Thunderstorms

    • 63
    • 75

    Partly Sunny

Today 9 Aug Lake

Mostly sunny. Humid with Highs in the mid 80s. East Winds around 5 Mph, becoming west in the afternoon.

Tonight 9 Aug Lake

Partly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then mostly cloudy with a chance of Showers and Thunderstorms after midnight. Humid with Lows in the upper 60s. South Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mentor Harbor Temperature Statistics

August Temperature

Willoughby (3.1 miles)

  • Lowest 4 August, 2026

    51.8 °F

  • Average August

    71.8 °F

  • Highest 6 August, 2026

    84.2 °F

Climate (2021–2026)

Willoughby (3.1 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    51.7 °F

  • Average High 2021–2026

    59.4 °F
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