Knappa Slough - Knappa Weather Forecast

    • 48
    • 64

    Decreasing Clouds

    • 51
    • 74

    Mostly Sunny

    • 51
    • 68

    Partly Sunny

    • 48
    • 65

    Partly Sunny

    • 49
    • 64

    Rain Likely

    • 47
    • 56

    Rain Likely

    • 49
    • 62

    Chance Rain

Today 20 May North Oregon Coast Range Lowlands

Mostly sunny. Highs in the upper 60s. Northwest wind 5 to 10 Mph.

Tonight 20 May North Oregon Coast Range Lowlands

Partly cloudy. Patchy fog after midnight. Lows in the mid 40s. Northwest wind 5 to 10 Mph.

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Knappa Slough - Knappa Temperature Statistics

May Temperature

Astoria, Astoria Regional Airport (13.7 miles)

  • Lowest 17 May, 2026

    40.6 °F

  • Average May

    55.6 °F

  • Highest 3 May, 2026

    82.7 °F

Climate (2021–Present)

Astoria, Astoria Regional Airport (13.7 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    59.8 °F
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