Codman Island Weather Forecast

    • 52
    • 69

    Mostly Cloudy

    • 51
    • 64

    Rain Likely

    • 50
    • 62

    Rain

    • 50
    • 60

    Rain

    • 50
    • 62

    Slight Chance Rain Showers

    • 50
    • 67

    Mostly Cloudy

Today 25 Sep Knox

Partly sunny. Highs in the upper 60s. Northeast Winds around 10 Mph with Gusts up to 25 Mph.

Tonight 25 Sep Knox

Cloudy. A slight chance of rain after midnight. Lows in the lower 50s. Northeast Winds 10 to 15 Mph. Chance of rain 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Codman Island Temperature Statistics

September Temperature

Rockland, Knox County Regional Airport (11.2 miles)

  • Lowest 20 September, 2026

    39 °F

  • Average September

    59.8 °F

  • Highest 10 September, 2026

    84 °F

Climate (2021–2026)

Rockland, Knox County Regional Airport (11.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    54.8 °F
Get WillyWeather+ to remove ads