Thompson Lake Weather Forecast

    • 28
    • 46

    Becoming Sunny

    • 33
    • 49

    Partly Sunny

    • 35
    • 48

    Rain Showers

    • 37
    • 55

    Partly Sunny

    • 43
    • 57

    Mostly Cloudy

    • 46
    • 66

    Slight Chance Rain Showers

Today 10 May Southern Cook/North Shore

Partly sunny. Highs in the upper 40s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 10 May Southern Cook/North Shore

Partly cloudy with a chance of Flurries. Cold. Near steady temperature in the lower 30s. Northwest Winds around 5 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Thompson Lake Temperature Statistics

May Temperature

Grand Marais/Cook County Airport (4.3 miles)

  • Lowest 2 May, 2026

    21.2 °F

  • Average May

    38.3 °F

  • Highest 3 May, 2026

    57.2 °F

Climate (2021–Present)

Grand Marais/Cook County Airport (4.3 miles)

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  • Average Low 2021–2026

    28.7 °F

  • Average 2021–2026

    38.1 °F

  • Average High 2021–2026

    46.6 °F
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