Saco River - Thunder Island Weather Forecast

    • 22
    • 35

    Increasing Clouds

    • 26
    • 39

    Partly Sunny

    • 28
    • 49

    Partly Sunny

    • 29
    • 45

    Chance Rain/Snow

    • 28
    • 49

    Chance Rain/Snow

    • 18
    • 45

    Mostly Sunny

Today 18 Mar Coastal York

Mostly sunny. Highs in the mid 30s. West Winds around 10 Mph. Gusts up to 25 Mph this morning.

Tonight 18 Mar Coastal York

Partly cloudy. Lows in the lower 20s. Southeast Winds around 10 Mph in the Evening, becoming light and variable.

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Saco River - Thunder Island Temperature Statistics

March Temperature

Portland, Portland International Jetport (12.4 miles)

  • Lowest 2 March, 2026

    4.6 °F

  • Average March

    34.4 °F

  • Highest 10 March, 2026

    66 °F

Climate (2021–Present)

Portland, Portland International Jetport (12.4 miles)

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  • Average Low 2021–2026

    40.2 °F

  • Average 2021–2026

    48.8 °F

  • Average High 2021–2026

    57.2 °F
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