San Juan Island - Cattle Point Lighthouse Weather Forecast

    • 52
    • 70

    Increasing Clouds

    • 51
    • 70

    Cloudy

    • 50
    • 68

    Mostly Cloudy

    • 51
    • 69

    Mostly Sunny

    • 52
    • 67

    Mostly Sunny

    • 52
    • 66

    Mostly Sunny

    • 53
    • 66

    Mostly Sunny

Today 9 Jul San Juan County

Mostly sunny. Highs in the mid 60s to lower 70s. South wind to 10 Mph.

Tonight 9 Jul San Juan County

Partly cloudy in the evening then becoming mostly cloudy. Lows in the 50s. South wind to 10 Mph becoming southwest after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Juan Island - Cattle Point Lighthouse Temperature Statistics

July Temperature

Friday Harbor Airport (5.6 miles)

  • Lowest 5 July, 2026

    46.9 °F

  • Average July

    58.4 °F

  • Highest 6 July, 2026

    75 °F

Climate (2021–2026)

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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