Lieutenant Island Weather Forecast

    • 40
    • 44

    Rain

    • 31
    • 43

    Rain

    • 34
    • 38

    Partly Sunny

    • 37
    • 42

    Slight Chance Rain Showers

    • 35
    • 44

    Chance Rain

    • 28
    • 37

    Chance Snow

Today 10 Jan Barnstable

Mostly cloudy. A chance of rain in the afternoon. Near steady temperature in the lower 40s. Northwest Winds 5 to 10 Mph, becoming northeast in the afternoon. Chance of rain 40 percent.

Tonight 10 Jan Barnstable

Rain. Near steady temperature around 40. East Winds 5 to 10 Mph, becoming southeast after midnight. Gusts up to 20 Mph. Chance of rain near 100 percent.

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Lieutenant Island Temperature Statistics

January Temperature

Chatham, Chatham Municipal Airport (14.3 miles)

  • Lowest 7 January, 2026

    33.1 °F

  • Average January

    35.6 °F

  • Highest 7 January, 2026

    41 °F

Climate (2021–Present)

Chatham, Chatham Municipal Airport (14.3 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    53.9 °F

  • Average High 2021–2026

    60 °F
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