Lieutenant Island Weather Forecast

    • 21
    • 28

    Blustery

    • 26
    • 31

    Windy

    • 26
    • 34

    Partly Sunny

    • 26
    • 33

    Partly Sunny

    • 25
    • 32

    Slight Chance Snow

    • 24
    • 31

    Slight Chance Snow

Today 31 Jan Barnstable

Mostly sunny. Cold with Highs in the mid 20s. Northwest Winds 5 to 10 Mph.

Tonight 31 Jan Barnstable

Mostly cloudy. A chance of snow after midnight. Brisk and not as cool with Lows around 17. Temperature rising into the mid 20s after midnight. North Winds 5 to 10 Mph with Gusts up to 20 Mph, increasing to northeast 20 to 25 Mph after midnight. Chance of snow 50 percent.

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Lieutenant Island Temperature Statistics

January Temperature

Chatham, Chatham Municipal Airport (14.3 miles)

  • Lowest 24 January, 2026

    10.9 °F

  • Average January

    31.7 °F

  • Highest 11 January, 2026

    48.9 °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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