Sippican Harbor - Stewart Island Weather Forecast

    • 44
    • 57

    Chance Rain Showers

    • 46
    • 55

    Partly Sunny

    • 47
    • 54

    Rain Showers

    • 49
    • 59

    Rain Showers Likely

    • 46
    • 58

    Rain Showers Likely

    • 45
    • 56

    Partly Sunny

Today 7 May Southern Plymouth

Mostly cloudy with a chance of Showers this Morning, then partly sunny this afternoon. Patchy fog this morning. Highs in the mid 60s. Northwest Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 7 May Southern Plymouth

Mostly clear. Lows in the lower 40s. Northwest Winds around 5 Mph.

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Sippican Harbor - Stewart Island Temperature Statistics

May Temperature

New Bedford, New Bedford Regional Airport (9.9 miles)

  • Lowest 3 May, 2026

    36 °F

  • Average May

    50 °F

  • Highest 4 May, 2026

    66 °F

Climate (2021–Present)

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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