Lieutenant Island Weather Forecast

    • 38
    • 45

    Rain Showers

    • 37
    • 43

    Partly Sunny

    • 37
    • 44

    Rain Likely

    • 31
    • 41

    Slight Chance Rain

    • 33
    • 38

    Partly Sunny

    • 32
    • 42

    Slight Chance Rain

Today 20 Mar Barnstable

Mostly sunny. Highs in the upper 40s. West Winds around 5 Mph, increasing to south 15 to 20 Mph with Gusts up to 35 Mph this afternoon.

Tonight 20 Mar Barnstable

Showers. Lows in the upper 30s. Southwest Winds 15 to 20 Mph. Gusts up to 40 Mph, decreasing to 30 Mph after midnight. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lieutenant Island Temperature Statistics

March Temperature

Chatham, Chatham Municipal Airport (14.3 miles)

  • Lowest 3 March, 2026

    15.1 °F

  • Average March

    38.7 °F

  • Highest 9 March, 2026

    59 °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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