Flattop Island Weather Forecast

    • 48
    • 57

    Rain Showers Likely

    • 48
    • 57

    Rain

    • 48
    • 57

    Rain

    • 48
    • 58

    Rain Likely

    • 48
    • 58

    Mostly Cloudy

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    • 59

    Mostly Cloudy

    • 50
    • 58

    Mostly Cloudy

Today 17 May San Juan County

Mostly cloudy with a chance of Showers until late Afternoon, then Showers likely late in the afternoon. Rainfall Amounts a tenth to a quarter of an inch possible. Highs in the upper 50s to mid 60s. Southwest wind around 10 Mph becoming west with Gusts to 25 Mph in the afternoon.

Tonight 17 May San Juan County

Breezy. Mostly cloudy. A chance of Showers and a slight chance of Thunderstorms in the Evening, then a chance of rain after midnight. Lows in the 40s. West wind 15 to 25 Mph with Gusts to 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Flattop Island Temperature Statistics

May Temperature

Eastsound, Orcas Island Airport (8.7 miles)

  • Lowest 1 May, 2025

    41 °F

  • Average May

    53.7 °F

  • Highest 2 May, 2025

    68 °F

Climate (2020–Present)

Eastsound, Orcas Island Airport (8.7 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    51.6 °F

  • Average High 2020–2025

    57.5 °F
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