Long Island Weather Forecast

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    • 50

    Chance Rain Showers

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    • 50

    Rain Showers

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    • 49

    Chance Rain Showers

    • 40
    • 50

    Partly Sunny

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    • 50

    Rain

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    Rain

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    Rain Likely

Today 3 Mar San Juan County

Partly sunny with a slight chance of Showers. Highs near 50. Light wind.

Tonight 3 Mar San Juan County

Mostly cloudy. A slight chance of Showers until early Morning, then a chance of Showers in the morning. Lows in the upper 30s to mid 40s. Light wind becoming southeast 10 to 15 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Long Island Temperature Statistics

March Temperature

Friday Harbor Airport (6.8 miles)

  • Lowest 1 March, 2025

    39 °F

  • Average March

    46.6 °F

  • Highest 1 March, 2025

    57.9 °F

Climate (2020–Present)

Friday Harbor Airport (6.8 miles)

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  • Average Low 2020–2025

    44.2 °F

  • Average 2020–2025

    51.4 °F

  • Average High 2020–2025

    59.1 °F
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