Chatham Harbor - Tern Island Weather Forecast

    • 71
    • 78

    Partly Sunny

    • 71
    • 78

    Partly Sunny

    • 71
    • 78

    Partly Sunny

    • 70
    • 79

    Mostly Sunny

    • 70
    • 78

    Partly Sunny

    • 69
    • 79

    Chance Rain Showers

    • 69
    • 75

    Partly Sunny

Today 6 Aug Barnstable

Sunny. Near steady temperature in the lower 80s. Southwest Winds 10 to 15 Mph.

Tonight 6 Aug Barnstable

Partly cloudy. Patchy fog after midnight. Lows in the lower 70s. Southwest Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chatham Harbor - Tern Island Temperature Statistics

August Temperature

Chatham, Chatham Municipal Airport (1.9 miles)

  • Lowest 4 August, 2026

    64.9 °F

  • Average August

    73.2 °F

  • Highest 4 August, 2026

    80.1 °F

Climate (2021–2026)

Chatham, Chatham Municipal Airport (1.9 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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