Grand Beach Weather Forecast

    • 33
    • 45

    Partly Sunny

    • 40
    • 57

    Mostly Cloudy

    • 37
    • 52

    Chance Rain

    • 30
    • 61

    Chance Snow

    • 29
    • 43

    Slight Chance Snow

    • 29
    • 38

    Chance Snow

Today 29 Mar Coastal Cumberland

Partly sunny. Highs in the mid 40s. Southwest Winds around 10 Mph.

Tonight 29 Mar Coastal Cumberland

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 30s. Southwest Winds around 10 Mph with Gusts up to 20 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Beach Temperature Statistics

March Temperature

Portland, Portland International Jetport (7.5 miles)

  • Lowest 2 March, 2026

    4.6 °F

  • Average March

    35.3 °F

  • Highest 10 March, 2026

    67.6 °F

Climate (2021–Present)

Portland, Portland International Jetport (7.5 miles)

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  • Average Low 2021–2026

    40.1 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    57.2 °F
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