Merchant Island Weather Forecast

    • 34
    • 40

    Rain

    • 31
    • 41

    Slight Chance Rain

    • 30
    • 37

    Snow

    • 25
    • 35

    Chance Rain/Snow

    • 31
    • 36

    Mostly Cloudy

    • 27
    • 39

    Chance Rain

Today 20 Mar Knox

Mostly sunny this Morning, then mostly cloudy with a chance of rain this afternoon. Highs in the mid 40s. Light and variable Winds, becoming south around 10 Mph this afternoon. Chance of rain 50 percent.

Tonight 20 Mar Knox

Cloudy. Rain and snow this Evening, then a chance of rain after midnight. Little or no snow accumulation. Lows in the lower 30s. South Winds around 10 Mph, becoming southwest after midnight. Chance of precipitation 90 percent.

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Merchant Island Temperature Statistics

March Temperature

Rockland, Knox County Regional Airport (22.4 miles)

  • Lowest 2 March, 2026

    3 °F

  • Average March

    34 °F

  • Highest 10 March, 2026

    57 °F

Climate (2021–Present)

Rockland, Knox County Regional Airport (22.4 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    47.7 °F

  • Average High 2021–2026

    55 °F
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