Patterson Lake Weather Forecast

    • 52
    • 63

    Chance Rain Showers

    • 49
    • 56

    Mostly Cloudy

    • 48
    • 57

    Partly Sunny

    • 53
    • 58

    Sunny

    • 53
    • 61

    Mostly Sunny

    • 55
    • 62

    Partly Sunny

    • 56
    • 65

    Partly Sunny

Today 19 Sep Keweenaw

Partly cloudy. Highs 64 to 69.

Tonight 19 Sep Keweenaw

Patchy fog in the evening. Mostly cloudy with a 20 percent chance of Showers. Lows around 50. Light north Winds, increasing to 5 to 15 Mph with Gusts up to 25 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Patterson Lake Temperature Statistics

September Temperature

Copper Harbor (55.9 miles)

  • Lowest 14 September, 2026

    46 °F

  • Average September

    63.5 °F

  • Highest 1 September, 2026

    80.1 °F

Climate (2021–2026)

Copper Harbor (55.9 miles)

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  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    44.4 °F

  • Average High 2021–2026

    50.5 °F
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