Portland Weather Forecast

    • 51
    • 59

    Rain Showers

    • 51
    • 58

    Mostly Cloudy

    • 52
    • 61

    Partly Sunny

    • 59
    • 68

    Partly Sunny

    • 60
    • 72

    Partly Sunny

    • 57
    • 71

    Chance Rain Showers

Today 18 May Coastal Cumberland

Patchy fog this morning. Showers likely. Highs in the lower 60s. Northeast Winds around 10 Mph. Chance of rain 70 percent.

Tonight 18 May Coastal Cumberland

Cloudy. Showers Likely, mainly in the evening. Patchy fog after midnight. Lows around 50. Northeast Winds around 10 Mph in the Evening, becoming light and variable. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Portland Temperature Statistics

May Temperature

Portland, Portland International Jetport (2.5 miles)

  • Lowest 11 May, 2024

    34.6 °F

  • Average May

    51.1 °F

  • Highest 7 May, 2024

    71.7 °F

Climate (2019–Present)

Portland, Portland International Jetport (2.5 miles)

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  • Average Low 2019–2024

    40.8 °F

  • Average 2019–2024

    49 °F

  • Average High 2019–2024

    57.2 °F
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