Seavey Island Weather Forecast

    • 57
    • 66

    Slight Chance Rain Showers

    • 43
    • 69

    Mostly Sunny

    • 41
    • 63

    Mostly Sunny

    • 54
    • 62

    Partly Sunny

    • 57
    • 64

    Partly Sunny

    • 56
    • 69

    Slight Chance Rain Showers

Today 18 Sep Knox

Patchy fog in the morning. Mostly cloudy with isolated Showers in the Morning, then partly sunny in the afternoon. Highs in the mid 70s. Light and variable Winds. Chance of rain 20 percent.

Tonight 18 Sep Knox

Cloudy with isolated Showers. Patchy fog. Lows in the lower 50s. Light and variable Winds. Chance of rain 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Seavey Island Temperature Statistics

September Temperature

Rockland, Knox County Regional Airport (6.8 miles)

  • Lowest 10 September, 2025

    43 °F

  • Average September

    60 °F

  • Highest 1 September, 2025

    75.9 °F

Climate (2020–Present)

Rockland, Knox County Regional Airport (6.8 miles)

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

  • Average Low 2020–2025

    39.9 °F

  • Average 2020–2025

    48 °F

  • Average High 2020–2025

    55.3 °F
Get WillyWeather+ to remove ads