Arlington Heights Weather Forecast

    • 58
    • 77

    Becoming Sunny

    • 62
    • 91

    Patchy Smoke

    • 58
    • 86

    Partly Sunny

    • 58
    • 80

    Partly Sunny

    • 56
    • 77

    Mostly Sunny

    • 55
    • 76

    Mostly Sunny

    • 54
    • 75

    Mostly Sunny

Today 23 Aug West Hills and Chehalem Mountains

Sunny. Highs in the upper 70s. Winds light.

Tonight 23 Aug West Hills and Chehalem Mountains

Clear. Lows in the upper 50s. North 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

    72.3 °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

    65.4 °F
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