Grand Portage National Monument Weather Forecast

    • 48
    • 69

    Rain Showers

    • 51
    • 77

    Partly Sunny

    • 49
    • 73

    Chance Rain Showers

    • 43
    • 66

    Rain Showers Likely

    • 46
    • 66

    Rain Showers Likely

    • 48
    • 68

    Chance Rain Showers

    • 54
    • 71

    Chance Rain Showers

Today 16 Jun Southern Cook/North Shore

Mostly cloudy with a slight chance of Showers and Thunderstorms. Near steady temperature in the mid 60s. Southeast Winds around 5 Mph. Chance of rain 20 percent.

Tonight 16 Jun Southern Cook/North Shore

Thunderstorms likely. Showers. Locally heavy rainfall possible this evening. Lows around 50. East Winds 5 to 10 Mph, becoming north with Gusts up to 20 Mph after midnight. Chance of rain 90 percent.

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Grand Portage National Monument Temperature Statistics

June Temperature

Grand Marais/Cook County Airport (31.7 miles)

  • Lowest 1 June, 2025

    30.2 °F

  • Average June

    54 °F

  • Highest 2 June, 2025

    78.8 °F

Climate (2020–Present)

Grand Marais/Cook County Airport (31.7 miles)

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  • Average Low 2020–2025

    28.8 °F

  • Average 2020–2025

    38.2 °F

  • Average High 2020–2025

    46.8 °F
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