Merchant Island Weather Forecast

    • 44
    • 50

    Rain

    • 42
    • 53

    Chance Rain Showers

    • 42
    • 50

    Partly Sunny

    • 43
    • 50

    Chance Rain Showers

    • 43
    • 51

    Chance Rain Showers

    • 43
    • 52

    Chance Rain Showers

Today 6 May Knox

Rain likely. Near steady temperature in the mid 50s. South Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain 70 percent.

Tonight 6 May Knox

Rain in the Evening, then Showers likely after midnight. Lows in the mid 40s. South Winds 15 to 20 Mph with Gusts up to 35 Mph, becoming southwest around 10 Mph with Gusts up to 25 Mph after midnight. Chance of rain near 100 percent.

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Merchant Island Temperature Statistics

May Temperature

Rockland, Knox County Regional Airport (22.4 miles)

  • Lowest 4 May, 2026

    32 °F

  • Average May

    46.7 °F

  • Highest 4 May, 2026

    63 °F

Climate (2021–Present)

Rockland, Knox County Regional Airport (22.4 miles)

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  • Average Low 2021–2026

    39.5 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    54.8 °F
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