Sippican Harbor - Stewart Island Weather Forecast

    • 62
    • 73

    Mostly Sunny

    • 63
    • 72

    Rain Showers

    • 62
    • 71

    Rain Showers

    • 63
    • 75

    Mostly Sunny

    • 64
    • 72

    Slight Chance Rain Showers

    • 65
    • 71

    Slight Chance Rain Showers

Today 21 Jun Southern Plymouth

Mostly clear. Lows in the lower 60s. Highs in the mid 80s.

Tonight 21 Jun Southern Plymouth

Partly cloudy with a 30 percent chance of Showers. Lows in the lower 60s.

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Sippican Harbor - Stewart Island Temperature Statistics

June Temperature

New Bedford, New Bedford Regional Airport (9.9 miles)

  • Lowest 2 June, 2026

    37.9 °F

  • Average June

    67.9 °F

  • Highest 11 June, 2026

    88 °F

Climate (2021–2026)

New Bedford, New Bedford Regional Airport (9.9 miles)

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  • Average Low 2021–2026

    43.2 °F

  • Average 2021–2026

    52.7 °F

  • Average High 2021–2026

    61.9 °F
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