Wormald State Park Weather Forecast

    • 40
    • 55

    Rain Showers

    • 47
    • 63

    Chance Rain

    • 44
    • 61

    Chance Rain

    • 44
    • 62

    Chance Rain

    • 48
    • 68

    Partly Sunny

    • 50
    • 76

    Chance Rain

    • 50
    • 71

    Chance Rain

Today 20 May South Washington Cascade Foothills

Mostly cloudy. A chance of rain Showers this Morning, then rain Showers likely with a slight chance of Thunderstorms this afternoon. Highs in the upper 50s. Winds light. Chance of rain 70 percent. Rainfall Amounts a tenth to a quarter of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 20 May South Washington Cascade Foothills

Mostly cloudy. A chance of rain Showers with a slight chance of Thunderstorms in the evening. Lows around 40. Winds light in the Evening, becoming light and variable. Chance of rain 50 percent. Rainfall Amounts less than a tenth of an Inch, except higher Amounts possible in Thunderstorms.

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Wormald State Park Temperature Statistics

May Temperature

Portland, Portland-Troutdale Airport (18 miles)

  • Lowest 4 May, 2025

    37.7 °F

  • Average May

    57.1 °F

  • Highest 6 May, 2025

    81.6 °F

Climate (2020–Present)

Portland, Portland-Troutdale Airport (18 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    56 °F

  • Average High 2020–2025

    65.1 °F
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