Lieutenant Island Weather Forecast

    • 69
    • 74

    Rain Showers

    • 68
    • 75

    Rain Showers

    • 68
    • 74

    Partly Sunny

    • 70
    • 77

    Mostly Cloudy

    • 70
    • 80

    Partly Sunny

    • 70
    • 79

    Partly Sunny

Today 2 Aug Barnstable

Mostly cloudy. Patchy fog this morning. Highs in the upper 70s. South Winds 5 to 10 Mph. Gusts up to 20 Mph this afternoon.

Tonight 2 Aug Barnstable

Mostly cloudy. A chance of Showers with isolated Thunderstorms in the Evening, then Showers likely with a slight chance of Thunderstorms after midnight. Patchy fog after midnight. Humid with Lows around 70. South Winds 10 to 15 Mph. Gusts up to 25 Mph after midnight. Chance of rain 70 percent.

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Lieutenant Island Temperature Statistics

August Temperature

Chatham, Chatham Municipal Airport (14.3 miles)

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Climate (2021–2026)

Chatham, Chatham Municipal Airport (14.3 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    59.7 °F
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