Cascadia State Park Weather Forecast

    • 43
    • 66

    Becoming Sunny

    • 46
    • 68

    Mostly Sunny

    • 48
    • 70

    Mostly Sunny

    • 48
    • 74

    Mostly Sunny

    • 48
    • 71

    Mostly Sunny

    • 48
    • 71

    Partly Sunny

Today 18 May Cascade Foothills of Marion and Linn Counties

Partly sunny in the Morning, then clearing. Highs in the mid 60s. Northwest wind 5 to 10 Mph.

Tonight 18 May Cascade Foothills of Marion and Linn Counties

Mostly clear. Lows in the lower 40s. North wind 5 to 10 Mph, becoming light after midnight.

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Cascadia State Park Temperature Statistics

May Temperature

Corvallis, Corvallis Municipal Airport (40.4 miles)

  • Lowest 15 May, 2026

    39.9 °F

  • Average May

    58.7 °F

  • Highest 3 May, 2026

    88 °F

Climate (2021–Present)

Corvallis, Corvallis Municipal Airport (40.4 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    53.2 °F

  • Average High 2021–2026

    64 °F
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