San Juan Island - Cattle Point Lighthouse Weather Forecast

    • 41
    • 52

    Mostly Sunny

    • 43
    • 54

    Mostly Sunny

    • 44
    • 56

    Mostly Sunny

    • 45
    • 58

    Partly Sunny

    • 44
    • 55

    Chance Rain

    • 44
    • 54

    Slight Chance Rain

Today 7 Apr San Juan County

Sunny. Highs near 50. West wind to 10 Mph in the morning becoming light.

Tonight 7 Apr San Juan County

Mostly clear. Lows near 40. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Juan Island - Cattle Point Lighthouse Temperature Statistics

April Temperature

Friday Harbor Airport (5.6 miles)

  • Lowest 1 April, 2026

    41 °F

  • Average April

    48.9 °F

  • Highest 5 April, 2026

    62.1 °F

Climate (2021–Present)

Friday Harbor Airport (5.6 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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