Vaill Island Weather Forecast

    • 60
    • 73

    Decreasing Clouds

    • 61
    • 69

    Mostly Sunny

    • 61
    • 66

    Chance Thunderstorms

    • 62
    • 65

    Rain Showers Likely

    • 62
    • 68

    Chance Rain Showers

    • 60
    • 67

    Chance Rain Showers

Today 30 Aug Coastal Cumberland

Partly sunny. Highs in the lower 80s. Southwest Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 30 Aug Coastal Cumberland

Mostly cloudy with a chance of Showers in the Evening, then partly cloudy with a slight chance of Showers after midnight. Lows in the upper 50s. West Winds around 10 Mph in the Evening, becoming light and variable. Chance of rain 50 percent.

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Vaill Island Temperature Statistics

August Temperature

Portland, Portland International Jetport (7.5 miles)

  • Lowest 15 August, 2026

    54.6 °F

  • Average August

    71.4 °F

  • Highest 9 August, 2026

    92.6 °F

Climate (2021–2026)

Portland, Portland International Jetport (7.5 miles)

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  • Average Low 2021–2026

    40 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    57.3 °F
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