Brown Island Weather Forecast

    • 44
    • 54

    Rain

    • 40
    • 53

    Rain

    • 38
    • 50

    Chance Rain

    • 39
    • 48

    Rain Likely

    • 42
    • 51

    Rain Likely

    • 42
    • 53

    Rain Likely

Today 22 Nov San Juan County

A chance of rain in the Morning, then rain likely early in the afternoon. Rain at Times late in the afternoon. Rainfall Amounts less than a tenth of an inch likely. Highs in the lower to mid 50s. Southeast wind 10 to 15 Mph.

Tonight 22 Nov San Juan County

Rain likely in the Evening, then rain at Times after midnight. Rainfall Amounts a tenth to a quarter of an inch possible. Lows in the 40s. Southeast wind 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Brown Island Temperature Statistics

November Temperature

Friday Harbor Airport (1.2 miles)

  • Lowest 4 November, 2025

    37 °F

  • Average November

    47.9 °F

  • Highest 5 November, 2025

    57 °F

Climate (2020–Present)

Friday Harbor Airport (1.2 miles)

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  • Average Low 2020–2025

    44.3 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    59.6 °F
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