Margos Lake Weather Forecast

    • 48
    • 70

    Increasing Clouds

    • 50
    • 67

    Chance Rain

    • 47
    • 65

    Rain

    • 49
    • 65

    Partly Sunny

    • 50
    • 68

    Partly Sunny

    • 49
    • 67

    Partly Sunny

Today 23 May San Juan County

Mostly sunny. Highs in the mid 60s to lower 70s. Light wind becoming south to 10 Mph in the afternoon.

Tonight 23 May San Juan County

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 40s to lower 50s. Southwest wind 10 to 15 Mph with Gusts to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Margos Lake Temperature Statistics

May Temperature

Friday Harbor Airport (3.1 miles)

  • Lowest 17 May, 2026

    41 °F

  • Average May

    54.9 °F

  • Highest 3 May, 2026

    75.9 °F

Climate (2021–Present)

Friday Harbor Airport (3.1 miles)

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  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    59.7 °F
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