St Johns Weather Forecast

    • 53
    • 82

    Slight Chance Rain

    • 49
    • 65

    Partly Sunny

    • 48
    • 68

    Partly Sunny

    • 45
    • 63

    Slight Chance Rain

    • 44
    • 61

    Chance Rain

    • 47
    • 66

    Partly Sunny

Today 12 May Inner Portland Metro

Mostly sunny. Highs in the lower 80s. Winds Light, becoming southwest 5 to 10 Mph this afternoon.

Tonight 12 May Inner Portland Metro

Mostly cloudy with a slight chance of Thunderstorms. A chance of Showers in the Evening, then Showers likely after midnight. Lows in the lower 50s. Southwest wind 5 to 10 Mph. Chance of rain 70 percent. Rainfall Amounts less than a tenth of an Inch, except higher Amounts possible in Thunderstorms.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St Johns Temperature Statistics

May Temperature

Pearson Airfield (5 miles)

  • Lowest 9 May, 2026

    46.7 °F

  • Average May

    63.1 °F

  • Highest 3 May, 2026

    91.7 °F

Climate (2021–Present)

Pearson Airfield (5 miles)

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  • Average Low 2021–2026

    46.4 °F

  • Average 2021–2026

    55.4 °F

  • Average High 2021–2026

    64.8 °F
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