Lieutenant Island Weather Forecast

    • 38
    • 46

    Slight Chance Rain Showers

    • 33
    • 44

    Chance Rain/Snow

    • 35
    • 39

    Mostly Sunny

    • 40
    • 44

    Partly Sunny

    • 44
    • 49

    Partly Sunny

    • 42
    • 52

    Mostly Sunny

Today 6 Apr Barnstable

Sunny. Highs in the upper 40s. West Winds 10 to 15 Mph.

Tonight 6 Apr Barnstable

Mostly clear in the Evening, then becoming mostly cloudy. Lows in the mid 30s. West Winds 5 to 10 Mph.

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Lieutenant Island Temperature Statistics

April Temperature

Chatham, Chatham Municipal Airport (14.3 miles)

  • Lowest 2 April, 2026

    37.9 °F

  • Average April

    43.8 °F

  • Highest 4 April, 2026

    54 °F

Climate (2021–Present)

Chatham, Chatham Municipal Airport (14.3 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    53.8 °F

  • Average High 2021–2026

    59.8 °F
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