Ottawa Lake Weather Forecast

    • 59
    • 86

    Mostly Sunny

    • 57
    • 79

    Partly Sunny

    • 57
    • 77

    Mostly Cloudy

    • 62
    • 85

    Chance Rain Showers

    • 61
    • 81

    Chance Rain Showers

    • 58
    • 80

    Chance Rain Showers

Today 18 Sep Monroe

Mostly sunny. Highs in the mid 80s. West Winds up to 5 Mph, becoming north in the afternoon.

Tonight 18 Sep Monroe

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 50s. Northeast Winds up to 5 Mph.

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Ottawa Lake Temperature Statistics

September Temperature

Lambertville, Toledo Suburban Airport (5 miles)

  • Lowest 8 September, 2025

    42.6 °F

  • Average September

    63 °F

  • Highest 3 September, 2025

    83.7 °F

Climate (2020–Present)

Lambertville, Toledo Suburban Airport (5 miles)

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  • Average Low 2020–2025

    42.9 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    60.7 °F
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