Mountain Lake Weather Forecast

    • 48
    • 59

    Mostly Cloudy

    • 48
    • 58

    Mostly Cloudy

    • 50
    • 59

    Partly Sunny

    • 51
    • 63

    Mostly Sunny

    • 50
    • 64

    Mostly Sunny

    • 49
    • 60

    Mostly Sunny

    • 48
    • 59

    Partly Sunny

Today 30 Apr San Juan County

Partly sunny. Patchy fog in the morning. Highs in the upper 50s to mid 60s. Light wind.

Tonight 30 Apr San Juan County

Mostly clear in the evening then becoming mostly cloudy. Lows in the mid 40s to lower 50s. West wind to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mountain Lake Temperature Statistics

April Temperature

Eastsound, Orcas Island Airport (5 miles)

  • Lowest 15 April, 2026

    35.6 °F

  • Average April

    48.6 °F

  • Highest 6 April, 2026

    64.4 °F

Climate (2021–Present)

Eastsound, Orcas Island Airport (5 miles)

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  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    57.9 °F
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