Friday Harbor SPB Weather Forecast

    • 46
    • 64

    Rain Likely

    • 48
    • 65

    Partly Sunny

    • 49
    • 68

    Mostly Sunny

    • 48
    • 71

    Partly Sunny

    • 46
    • 67

    Partly Sunny

    • 46
    • 65

    Partly Sunny

Today 25 May San Juan County

Breezy, cloudy. A slight chance of rain in the Morning, then a chance of rain early in the afternoon. Rain likely late in the afternoon. Rainfall Amounts less than a tenth of an inch likely. Highs in the 60s. Southeast wind 15 to 25 Mph becoming south in the afternoon. Gusts to 35 Mph.

Tonight 25 May San Juan County

Mostly cloudy. A chance of Showers in the Evening, then Showers likely late in the evening. A chance of Showers after midnight. Rainfall Amounts less than a tenth of an inch likely. Lows in the mid 40s to lower 50s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Friday Harbor SPB Temperature Statistics

May Temperature

Friday Harbor Airport (1.2 miles)

  • Lowest 17 May, 2026

    41 °F

  • Average May

    55 °F

  • Highest 3 May, 2026

    75.9 °F

Climate (2021–Present)

Friday Harbor Airport (1.2 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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