Lieutenant Island Weather Forecast

    • 44
    • 48

    Chance Rain

    • 44
    • 50

    Rain Likely

    • 38
    • 52

    Rain Likely

    • 38
    • 42

    Chance Rain

    • 42
    • 48

    Chance Rain

    • 40
    • 46

    Chance Rain

Today 30 Mar Barnstable

Partly Sunny, then becoming mostly cloudy. A slight chance of rain. Near steady temperature around 50. Southwest Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain 20 percent.

Tonight 30 Mar Barnstable

Mostly cloudy. A slight chance of rain in the Evening, then a chance of rain after midnight. Lows in the lower 40s. Southwest Winds 15 to 20 Mph. Gusts up to 35 Mph, decreasing to 25 Mph after midnight. Chance of rain 40 percent.

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Lieutenant Island Temperature Statistics

March Temperature

Chatham, Chatham Municipal Airport (14.3 miles)

  • Lowest 3 March, 2026

    15.1 °F

  • Average March

    38.6 °F

  • Highest 9 March, 2026

    59 °F

Climate (2021–Present)

Chatham, Chatham Municipal Airport (14.3 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    53.8 °F

  • Average High 2021–2026

    59.8 °F
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