Lieutenant Island Weather Forecast

    • 65
    • 75

    Mostly Sunny

    • 66
    • 77

    Partly Sunny

    • 68
    • 78

    Partly Sunny

    • 68
    • 79

    Chance Rain Showers

    • 67
    • 78

    Chance Rain Showers

    • 66
    • 75

    Slight Chance Rain Showers

Today 4 Jul Barnstable

Sunny. Highs in the upper 70s. Northwest Winds 5 to 10 Mph. Gusts up to 20 Mph in the morning.

Tonight 4 Jul Barnstable

Mostly clear. Lows in the upper 50s. South Winds around 5 Mph, becoming northwest after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Lieutenant Island Temperature Statistics

July Temperature

Chatham, Chatham Municipal Airport (14.3 miles)

  • Lowest 1 July, 2025

    64 °F

  • Average July

    70.1 °F

  • Highest 1 July, 2025

    73.9 °F

Climate (2020–Present)

Chatham, Chatham Municipal Airport (14.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    54.1 °F

  • Average High 2020–2025

    60.2 °F
Get WillyWeather+ to remove ads