Lieutenant Island Weather Forecast

    • 37
    • 48

    Slight Chance Rain Showers

    • 39
    • 45

    Partly Sunny

    • 42
    • 47

    Slight Chance Rain Showers

    • 41
    • 49

    Partly Sunny

    • 41
    • 47

    Partly Sunny

    • 42
    • 47

    Chance Rain Showers

    • 44
    • 49

    Slight Chance Rain Showers

Today 20 Apr Barnstable

Partly sunny with a 20 percent chance of rain. Near steady temperature around 50. West Winds 5 to 10 Mph.

Tonight 20 Apr Barnstable

Mostly cloudy with a 20 percent chance of rain Showers. Lows in the lower 30s. North Winds 5 to 10 Mph. Gusts up to 20 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

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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