Long Island Weather Forecast

    • 42
    • 52

    Becoming Sunny

    • 44
    • 55

    Partly Sunny

    • 47
    • 57

    Mostly Cloudy

    • 47
    • 56

    Rain Likely

    • 46
    • 54

    Rain Likely

    • 47
    • 55

    Rain Likely

Today 3 Apr San Juan County

Mostly sunny. Highs in the lower to mid 50s. Light wind.

Tonight 3 Apr San Juan County

Mostly clear. Lows near 40. Light wind.

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Long Island Temperature Statistics

April Temperature

Friday Harbor Airport (6.8 miles)

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  • Average April

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Climate (2020–Present)

Friday Harbor Airport (6.8 miles)

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  • Average Low 2020–2025

    44.3 °F

  • Average 2020–2025

    51.5 °F

  • Average High 2020–2025

    59.2 °F
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