San Juan Island - Friday Harbor Weather Forecast

    • 44
    • 49

    Rain

    • 45
    • 52

    Rain

    • 44
    • 52

    Rain

    • 45
    • 52

    Rain

    • 42
    • 51

    Rain Likely

    • 42
    • 52

    Mostly Cloudy

Today 21 Feb San Juan County

Breezy, cloudy. A slight chance of rain in the Morning, then a chance of rain late in the morning. Rain at Times in the afternoon. Rainfall Amounts a tenth to a quarter of an inch possible. Highs in the mid 40s to lower 50s. Southeast wind 15 to 25 Mph.

Tonight 21 Feb San Juan County

Windy. Cloudy with rain at Times in the Evening, then cloudy with a chance of rain after midnight. Rainfall Amounts a tenth to a quarter of an inch possible. Lows in the lower to mid 40s. Southeast wind 15 to 30 Mph. Gusts to 40 Mph in the evening.

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San Juan Island - Friday Harbor Temperature Statistics

February Temperature

Friday Harbor Airport (1.9 miles)

  • Lowest 11 February, 2025

    22.7 °F

  • Average February

    37.5 °F

  • Highest 19 February, 2025

    51.1 °F

Climate (2020–Present)

Friday Harbor Airport (1.9 miles)

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  • Average Low 2020–2025

    44.1 °F

  • Average 2020–2025

    51.4 °F

  • Average High 2020–2025

    59.1 °F
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