Frost Island Weather Forecast

    • 44
    • 52

    Decreasing Clouds

    • 47
    • 52

    Rain Likely

    • 47
    • 52

    Rain

    • 44
    • 51

    Rain Likely

    • 42
    • 49

    Chance Rain

    • 41
    • 48

    Slight Chance Rain

Today 5 Feb San Juan County

Mostly sunny. Highs in the upper 40s to mid 50s. Light wind.

Tonight 5 Feb San Juan County

Partly cloudy. Lows in the upper 30s to mid 40s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Frost Island Temperature Statistics

February Temperature

Friday Harbor Airport (8.1 miles)

  • Lowest 1 February, 2026

    45 °F

  • Average February

    48.2 °F

  • Highest 1 February, 2026

    52 °F

Climate (2021–Present)

Friday Harbor Airport (8.1 miles)

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  • Average Low 2021–2026

    44.4 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    59.6 °F
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