Codman Island Weather Forecast

    • 24
    • 33

    Mostly Cloudy

    • 26
    • 40

    Decreasing Clouds

    • 38
    • 45

    Rain

    • 21
    • 53

    Rain

    • 24
    • 34

    Chance Rain/Snow

    • 19
    • 39

    Slight Chance Snow

    • 14
    • 28

    Partly Sunny

Today 16 Dec Knox

Mostly sunny. Highs in the lower 30s. Southwest Winds around 10 Mph.

Tonight 16 Dec Knox

Mostly cloudy this Evening, then becoming partly cloudy. Lows in the mid 20s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Codman Island Temperature Statistics

December Temperature

Rockland, Knox County Regional Airport (11.2 miles)

  • Lowest 9 December, 2025

    -2 °F

  • Average December

    25.5 °F

  • Highest 10 December, 2025

    45 °F

Climate (2020–Present)

Rockland, Knox County Regional Airport (11.2 miles)

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  • Average Low 2020–2025

    39.9 °F

  • Average 2020–2025

    47.9 °F

  • Average High 2020–2025

    55.2 °F
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