Cranberry Island Weather Forecast

    • 44
    • 47

    Chance Rain Showers

    • 46
    • 51

    Rain

    • 45
    • 50

    Rain

    • 50
    • 57

    Mostly Sunny

    • 48
    • 58

    Mostly Sunny

    • 46
    • 53

    Mostly Cloudy

    • 51
    • 55

    Mostly Cloudy

Today 13 May Knox

Cloudy with a 50 percent chance of Showers. Highs in the lower 50s. South Winds around 10 Mph.

Tonight 13 May Knox

Mostly cloudy. A slight chance of Showers in the evening. Patchy fog after midnight. Lows in the mid 40s. Light and variable Winds. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cranberry Island Temperature Statistics

May Temperature

Rockland, Knox County Regional Airport (15.5 miles)

  • Lowest 4 May, 2026

    32 °F

  • Average May

    49 °F

  • Highest 4 May, 2026

    63 °F

Climate (2021–Present)

Rockland, Knox County Regional Airport (15.5 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    54.8 °F
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