Chatham Harbor Weather Forecast

    • 71
    • 78

    Increasing Clouds

    • 67
    • 80

    Partly Sunny

    • 69
    • 76

    Partly Sunny

    • 66
    • 80

    Chance Rain Showers

    • 64
    • 78

    Mostly Sunny

    • 65
    • 75

    Mostly Sunny

Today 10 Aug Barnstable

Sunny with Highs in the mid 80s. Southwest Winds 5 to 10 Mph. Gusts up to 20 Mph in the afternoon.

Tonight 10 Aug Barnstable

Mostly clear. Lows around 70. Northwest Winds around 5 Mph.

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Chatham Harbor Temperature Statistics

August Temperature

Chatham, Chatham Municipal Airport (1.9 miles)

  • Lowest 5 August, 2026

    61 °F

  • Average August

    74.3 °F

  • Highest 7 August, 2026

    84 °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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