Lake Upson Weather Forecast

    • 37
    • 45

    Increasing Clouds

    • 36
    • 46

    Rain Showers

    • 39
    • 51

    Partly Sunny

    • 43
    • 58

    Chance Rain Showers

    • 42
    • 61

    Chance Rain Showers

    • 40
    • 55

    Chance Rain Showers

Today 11 May Keweenaw

Sunny. Southeast Winds 5 to 10 Mph.

Tonight 11 May Keweenaw

Partly cloudy in the Evening, then cloudy with a slight chance of rain Showers after midnight. Lows in the mid 30s. Southeast Winds 5 to 10 Mph with Gusts up to 25 Mph. 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 8 May, 2026

    30 °F

  • Average May

    41.6 °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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