St Johns Weather Forecast

    • 61
    • 77

    Mostly Cloudy

    • 60
    • 78

    Mostly Cloudy

    • 58
    • 77

    Mostly Sunny

    • 59
    • 81

    Mostly Sunny

    • 56
    • 81

    Sunny

    • 58
    • 85

    Sunny

    • 59
    • 90

    Sunny

Today 16 Aug Inner Portland Metro

Partly sunny. A slight chance of rain this morning. Highs in the upper 70s. Winds light. Chance of rain 20 percent.

Tonight 16 Aug Inner Portland Metro

Mostly cloudy. Lows in the upper 50s. Winds light.

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St Johns Temperature Statistics

August Temperature

Pearson Airfield (5 miles)

  • Lowest 8 August, 2025

    51.7 °F

  • Average August

    70.4 °F

  • Highest 10 August, 2025

    99.6 °F

Climate (2020–Present)

Pearson Airfield (5 miles)

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  • Average Low 2020–2025

    46.3 °F

  • Average 2020–2025

    55.2 °F

  • Average High 2020–2025

    64.5 °F
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