Merchant Island Weather Forecast

    • 52
    • 63

    Mostly Sunny

    • 58
    • 66

    Partly Sunny

    • 60
    • 69

    Partly Sunny

    • 59
    • 71

    Chance Rain Showers

    • 57
    • 69

    Partly Sunny

    • 58
    • 67

    Partly Sunny

Today 22 Jul Knox

Sunny. Highs in the mid 70s. Northwest Winds around 10 Mph.

Tonight 22 Jul Knox

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 50s. Light and variable Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Merchant Island Temperature Statistics

July Temperature

Rockland, Knox County Regional Airport (22.4 miles)

  • Lowest 19 July, 2025

    52 °F

  • Average July

    66.7 °F

  • Highest 2 July, 2025

    84 °F

Climate (2020–Present)

Rockland, Knox County Regional Airport (22.4 miles)

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

  • Average Low 2020–2025

    40 °F

  • Average 2020–2025

    48 °F

  • Average High 2020–2025

    55.3 °F
Get WillyWeather+ to remove ads