Shelter Island Weather Forecast

    • 32
    • 43

    Rain

    • 17
    • 38

    Mostly Cloudy

    • 5
    • 21

    Partly Sunny

    • 5
    • 19

    Partly Sunny

    • 5
    • 18

    Partly Sunny

    • 13
    • 24

    Mostly Cloudy

Today 18 Jan Coastal Cumberland

Cloudy. A slight chance of rain or snow in the Morning, then rain likely in the afternoon. Highs in the lower 40s. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of precipitation 70 percent.

Tonight 18 Jan Coastal Cumberland

Cloudy. Rain in the Evening, then scattered rain Showers after midnight. Lows around 30. South Winds 10 to 15 Mph with Gusts up to 30 Mph, becoming southwest after midnight. Chance of rain 80 percent.

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Shelter Island Temperature Statistics

January Temperature

Portland, Portland International Jetport (18 miles)

  • Lowest 7 January, 2025

    8.9 °F

  • Average January

    25.8 °F

  • Highest 1 January, 2025

    41.6 °F

Climate (2020–Present)

Portland, Portland International Jetport (18 miles)

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  • Average Low 2020–2025

    40.8 °F

  • Average 2020–2025

    49.2 °F

  • Average High 2020–2025

    57.5 °F
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