Lake Theresa Weather Forecast

    • 53
    • 69

    Chance Rain Showers

    • 49
    • 64

    Mostly Sunny

    • 50
    • 57

    Partly Sunny

    • 53
    • 60

    Rain Showers Likely

    • 52
    • 63

    Chance Rain Showers

    • 50
    • 61

    Partly Sunny

Today 1 Jul Keweenaw

Mostly sunny with a 40 percent chance of Showers. Near steady temperature in the mid 70s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 1 Jul Keweenaw

Mostly clear. Lows 54 to 59. West Winds 5 to 10 Mph. Gusts up to 25 Mph in the evening.

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Lake Theresa Temperature Statistics

July Temperature

Copper Harbor (52.2 miles)

  • Lowest

  • Average July

  • Highest

Climate (2020–Present)

Copper Harbor (52.2 miles)

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  • Average Low 2020–2025

    38.5 °F
  • Average 2020–2025

    44.6 °F
  • Average High 2020–2025

    50.8 °F
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