Flattop Island Weather Forecast

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    • 47

    Rain

    • 41
    • 49

    Rain

    • 40
    • 45

    Rain

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    • 44

    Rain Likely

    • 41
    • 45

    Rain

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    • 45

    Rain Likely

Today 17 Dec San Juan County

Windy. Partly sunny. A slight chance of rain late in the Morning, then a chance of rain in the afternoon. Highs in the mid 40s to lower 50s. West wind 20 to 35 Mph with Gusts to 45 Mph becoming southwest 15 to 30 Mph in the afternoon.

Tonight 17 Dec San Juan County

Rain likely in the Evening, then a chance of rain late in the evening. Rain at Times after midnight. Rainfall Amounts a tenth to a quarter of an inch possible. Lows near 40. South wind 10 to 20 Mph with Gusts to 30 Mph.

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  • Temperature Real-Time

Flattop Island Temperature Statistics

December Temperature

Eastsound, Orcas Island Airport (8.7 miles)

  • Lowest 2 December, 2025

    35.6 °F

  • Average December

    48.7 °F

  • Highest 15 December, 2025

    59 °F

Climate (2020–Present)

Eastsound, Orcas Island Airport (8.7 miles)

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  • Average Low 2020–2025

    46.1 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    57.7 °F
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