Arlington Heights Weather Forecast

    • 55
    • 81

    Mostly Sunny

    • 56
    • 80

    Mostly Sunny

    • 57
    • 81

    Partly Sunny

    • 56
    • 79

    Partly Sunny

    • 59
    • 83

    Mostly Sunny

    • 61
    • 87

    Partly Sunny

    • 60
    • 86

    Partly Sunny

Today 9 Aug West Hills and Chehalem Mountains

Sunny. Highs in the lower 80s. North wind 5 to 10 Mph.

Tonight 9 Aug West Hills and Chehalem Mountains

Mostly clear. Lows in the mid 50s. Northwest wind 5 to 10 Mph.

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Arlington Heights Temperature Statistics

August Temperature

Portland, Portland International Airport (6.8 miles)

  • Lowest 3 August, 2026

    55.7 °F

  • Average August

    72.4 °F

  • Highest 6 August, 2026

    94.6 °F

Climate (2021–2026)

Portland, Portland International Airport (6.8 miles)

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  • Average Low 2021–2026

    48.3 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    65.5 °F
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