Thompson Lake Weather Forecast

    • 30
    • 71

    Sunny

    • 31
    • 52

    Mostly Sunny

    • 42
    • 70

    Mostly Sunny

    • 39
    • 57

    Mostly Sunny

    • 51
    • 71

    Mostly Sunny

    • 48
    • 70

    Mostly Sunny

    • 49
    • 70

    Mostly Sunny

Today 7 May Southern Cook/North Shore

Sunny and much cooler. Near steady temperature in the upper 40s. East Winds 5 to 10 Mph with Gusts up to 25 Mph.

Tonight 7 May Southern Cook/North Shore

Clear. Areas of frost this Evening, then widespread frost after midnight. Cold with Lows in the lower 30s. Northeast Winds around 5 Mph.

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Thompson Lake Temperature Statistics

May Temperature

Grand Marais/Cook County Airport (4.3 miles)

  • Lowest 5 May, 2025

    39.2 °F

  • Average May

    58.7 °F

  • Highest 5 May, 2025

    66.2 °F

Climate (2020–Present)

Grand Marais/Cook County Airport (4.3 miles)

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  • Average Low 2020–2025

    28.9 °F

  • Average 2020–2025

    38.2 °F

  • Average High 2020–2025

    46.8 °F
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