Zephyr Lake Weather Forecast

    • 35
    • 54

    Rain Showers

    • 34
    • 49

    Rain Showers

    • 35
    • 60

    Partly Sunny

    • 45
    • 64

    Rain Showers Likely

    • 43
    • 70

    Chance Rain Showers

    • 39
    • 63

    Partly Sunny

Today 11 May Northern Cook/Northern Lake

Mostly sunny and not as cool. Near steady temperature in the upper 40s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 11 May Northern Cook/Northern Lake

Mostly cloudy. Rain Showers after midnight. Lows in the mid 30s. Southeast Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Zephyr Lake Temperature Statistics

May Temperature

Grand Marais/Cook County Airport (37.3 miles)

  • Lowest 2 May, 2026

    21.2 °F

  • Average May

    38.7 °F

  • Highest 3 May, 2026

    57.2 °F

Climate (2021–Present)

Grand Marais/Cook County Airport (37.3 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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