Courtney Lake Weather Forecast

    • 41
    • 57

    Chance Rain Showers

    • 42
    • 56

    Partly Sunny

    • 53
    • 69

    Rain Showers Likely

    • 50
    • 65

    Chance Rain Showers

    • 46
    • 66

    Partly Sunny

    • 44
    • 66

    Partly Sunny

    • 50
    • 68

    Slight Chance Thunderstorms

Today 6 Sep Ontonagon

Mostly cloudy with a 40 percent chance of Showers. West Winds 5 to 15 Mph with Gusts up to 25 Mph.

Tonight 6 Sep Ontonagon

Mostly cloudy. A chance of rain Showers this evening. Lows in the mid 40s. West Winds 5 to 10 Mph, becoming northwest after midnight. Chance of rain 50 percent.

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  • Temperature Real-Time

Courtney Lake Temperature Statistics

September Temperature

Houghton County Memorial Airport (35.4 miles)

  • Lowest 4 September, 2025

    44.1 °F

  • Average September

    58.3 °F

  • Highest 1 September, 2025

    78.1 °F

Climate (2020–Present)

Houghton County Memorial Airport (35.4 miles)

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  • Average Low 2020–2025

    35.8 °F

  • Average 2020–2025

    44.1 °F

  • Average High 2020–2025

    52.1 °F
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