Lake Upson Weather Forecast

    • 38
    • 56

    Mostly Cloudy

    • 35
    • 48

    Mostly Cloudy

    • 35
    • 45

    Partly Sunny

    • 36
    • 46

    Partly Sunny

    • 37
    • 49

    Slight Chance Rain Showers

    • 40
    • 53

    Partly Sunny

Today 8 May Keweenaw

Mostly cloudy. Southwest Winds 5 to 15 Mph.

Tonight 8 May Keweenaw

Mostly cloudy. A chance of rain Showers in the evening. Lows in the upper 30s. Light west Winds, becoming northwest 5 to 10 Mph after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Upson Temperature Statistics

May Temperature

Copper Harbor (7.5 miles)

  • Lowest 2 May, 2026

    32 °F

  • Average May

    41.9 °F

  • Highest 3 May, 2026

    57.9 °F

Climate (2021–Present)

Copper Harbor (7.5 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    44.6 °F

  • Average High 2021–2026

    50.8 °F
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