Lieutenant Island Weather Forecast

    • 61
    • 71

    Rain Showers

    • 55
    • 69

    Rain Showers Likely

    • 58
    • 64

    Mostly Sunny

    • 60
    • 73

    Mostly Sunny

    • 61
    • 75

    Slight Chance Rain Showers

    • 61
    • 73

    Slight Chance Thunderstorms

    • 61
    • 73

    Mostly Cloudy

Today 6 Jun Barnstable

Partly sunny. Highs in the upper 70s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 6 Jun Barnstable

Partly cloudy this Evening, then becoming mostly cloudy. Scattered Showers. Patchy fog after midnight. Lows in the lower 60s. Southwest Winds 15 to 20 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lieutenant Island Temperature Statistics

June Temperature

Chatham, Chatham Municipal Airport (14.3 miles)

  • Lowest 2 June, 2026

    42.1 °F

  • Average June

    57.5 °F

  • Highest 3 June, 2026

    73 °F

Climate (2021–Present)

Chatham, Chatham Municipal Airport (14.3 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    59.8 °F
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