Olso Lake Weather Forecast

    • 35
    • 61

    Becoming Sunny

    • 40
    • 50

    Rain Showers

    • 35
    • 55

    Rain Showers

    • 29
    • 44

    Chance Rain Showers

    • 33
    • 48

    Partly Sunny

    • 38
    • 53

    Chance Rain Showers

Today 16 May Southern Cook/North Shore

Sunny, cooler. Near steady temperature in the lower 60s. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 16 May Southern Cook/North Shore

Mostly clear. Areas of frost after midnight. Much cooler with Lows in the mid 30s. Northwest Winds 5 to 10 Mph with Gusts up to 25 Mph, becoming northeast after midnight.

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Olso Lake Temperature Statistics

May Temperature

Grand Marais/Cook County Airport (3.7 miles)

  • Lowest 2 May, 2026

    21.2 °F

  • Average May

    39.4 °F

  • Highest 13 May, 2026

    62.6 °F

Climate (2021–Present)

Grand Marais/Cook County Airport (3.7 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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