Merchant Island Weather Forecast

    • 22
    • 34

    Breezy

    • 21
    • 26

    Blustery

    • 30
    • 36

    Breezy

    • 30
    • 43

    Breezy

    • 40
    • 45

    Breezy

    • 22
    • 47

    Slight Chance Rain

Today 14 Dec Knox

Snow likely. Little or no snow accumulation. Highs around 30. North Winds around 10 Mph. Gusts up to 25 Mph this afternoon. Chance of snow 70 percent.

Tonight 14 Dec Knox

Partly cloudy. A slight chance of snow in the evening. Lows around 13. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of snow 20 percent. Wind chill Values as low as 1 below.

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Merchant Island Temperature Statistics

December Temperature

Rockland, Knox County Regional Airport (22.4 miles)

  • Lowest 9 December, 2025

    -2 °F

  • Average December

    25.6 °F

  • Highest 10 December, 2025

    45 °F

Climate (2020–Present)

Rockland, Knox County Regional Airport (22.4 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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