Chatham Harbor Entrance Weather Forecast

    • 68
    • 72

    Mostly Sunny

    • 65
    • 77

    Mostly Cloudy

    • 64
    • 68

    Slight Chance Rain Showers

    • 64
    • 69

    Partly Sunny

    • 65
    • 68

    Partly Sunny

    • 65
    • 69

    Mostly Sunny

Today 16 Aug Barnstable

Sunny. Highs in the upper 70s. Northeast Winds around 5 Mph, becoming east in the afternoon.

Tonight 16 Aug Barnstable

Partly cloudy. Near steady temperature in the lower 60s. Northeast Winds around 5 Mph.

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Chatham Harbor Entrance Temperature Statistics

August Temperature

Chatham, Chatham Municipal Airport (3.1 miles)

  • Lowest 9 August, 2025

    54.6 °F

  • Average August

    68.6 °F

  • Highest 12 August, 2025

    84.9 °F

Climate (2020–Present)

Chatham, Chatham Municipal Airport (3.1 miles)

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  • Average Low 2020–2025

    47.8 °F

  • Average 2020–2025

    54.1 °F

  • Average High 2020–2025

    60.1 °F
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