Lieutenant Island Weather Forecast

    • 40
    • 52

    Rain Showers

    • 37
    • 48

    Mostly Cloudy

    • 38
    • 44

    Partly Sunny

    • 42
    • 48

    Mostly Cloudy

    • 42
    • 49

    Mostly Cloudy

    • 42
    • 48

    Partly Sunny

    • 44
    • 48

    Slight Chance Rain Showers

Today 19 Apr Barnstable

Rain with isolated Thunderstorms. Patchy fog. Visibility one quarter mile or less at Times. Highs in the upper 50s. West Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain 90 percent.

Tonight 19 Apr Barnstable

Mostly cloudy with a chance of rain in the Evening, then mostly clear after midnight. Patchy fog in the evening. Lows in the upper 30s. Northwest Winds 15 to 20 Mph. Gusts up to 35 Mph, decreasing to 25 Mph after midnight. Chance of rain 50 percent.

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Lieutenant Island Temperature Statistics

April Temperature

Chatham, Chatham Municipal Airport (14.3 miles)

  • Lowest 9 April, 2026

    27 °F

  • Average April

    45.5 °F

  • Highest 15 April, 2026

    64.9 °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

    59.9 °F
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