Pearl Island Weather Forecast

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    Increasing Clouds

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    • 42

    Decreasing Clouds

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    • 43

    Mostly Sunny

    • 36
    • 41

    Mostly Cloudy

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    Mostly Cloudy

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    Mostly Cloudy

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    Chance Rain

Today 17 Jan San Juan County

Mostly sunny. Highs in the lower to mid 40s. North wind 10 to 15 Mph with Gusts to 25 Mph.

Tonight 17 Jan San Juan County

Clear in the late evening and early morning then becoming partly cloudy. Lows in the upper 20s to mid 30s. North wind to 10 Mph becoming northeast with Gusts to 20 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Pearl Island Temperature Statistics

January Temperature

Friday Harbor Airport (8.7 miles)

  • Lowest 13 January, 2025

    35.1 °F

  • Average January

    43.9 °F

  • Highest 15 January, 2025

    54 °F

Climate (2020–Present)

Friday Harbor Airport (8.7 miles)

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  • Average Low 2020–2025

    44.2 °F

  • Average 2020–2025

    51.4 °F

  • Average High 2020–2025

    59.1 °F
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