Markham Weather Forecast

    • 59
    • 75

    Slight Chance Rain Showers

    • 61
    • 72

    Rain Showers

    • 59
    • 68

    Rain Showers

    • 57
    • 71

    Slight Chance Rain Showers

    • 59
    • 74

    Mostly Cloudy

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    • 76

    Slight Chance Rain Showers

Today 7 Sep Inner Portland Metro

Mostly cloudy with a chance of drizzle this Morning, then mostly sunny this afternoon. Highs in the upper 70s. Winds light.

Tonight 7 Sep Inner Portland Metro

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 50s. Winds light.

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Markham Temperature Statistics

September Temperature

Portland, Portland International Airport (10.6 miles)

  • Lowest 2 September, 2025

    61 °F

  • Average September

    71.6 °F

  • Highest 2 September, 2025

    89.1 °F

Climate (2020–Present)

Portland, Portland International Airport (10.6 miles)

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  • Average Low 2020–2025

    48.3 °F

  • Average 2020–2025

    56.1 °F

  • Average High 2020–2025

    65.3 °F
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