Flattop Island Weather Forecast

    • 45
    • 51

    Mostly Cloudy

    • 50
    • 55

    Mostly Cloudy

    • 51
    • 58

    Mostly Cloudy

    • 50
    • 60

    Partly Sunny

    • 49
    • 57

    Slight Chance Rain

    • 47
    • 56

    Partly Sunny

Today 17 Apr San Juan County

Partly sunny in the morning then becoming sunny. Highs in the lower to mid 50s. Light wind.

Tonight 17 Apr San Juan County

Mostly cloudy. Lows in the lower to mid 40s. Light wind.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Flattop Island Temperature Statistics

April Temperature

Eastsound, Orcas Island Airport (8.7 miles)

  • Lowest 8 April, 2026

    37.4 °F

  • Average April

    49.2 °F

  • Highest 6 April, 2026

    64.4 °F

Climate (2021–Present)

Eastsound, Orcas Island Airport (8.7 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    57.9 °F
Get WillyWeather+ to remove ads