Rock Harbor Beach Weather Forecast

    • 36
    • 47

    Mostly Sunny

    • 43
    • 50

    Rain

    • 30
    • 54

    Rain

    • 35
    • 42

    Mostly Cloudy

    • 30
    • 46

    Partly Sunny

    • 28
    • 37

    Slight Chance Snow

Today 17 Dec Barnstable

Mostly sunny. Highs in the upper 40s. Southwest Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 17 Dec Barnstable

Mostly clear. Lows in the lower 30s. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

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  • Temperature Real-Time

Rock Harbor Beach Temperature Statistics

December Temperature

Chatham, Chatham Municipal Airport (7.5 miles)

  • Lowest 5 December, 2025

    19 °F

  • Average December

    34.6 °F

  • Highest 2 December, 2025

    50 °F

Climate (2020–Present)

Chatham, Chatham Municipal Airport (7.5 miles)

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  • Average Low 2020–2025

    47.6 °F

  • Average 2020–2025

    53.9 °F

  • Average High 2020–2025

    59.9 °F
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