Knappa Slough - Knappa Weather Forecast

    • 36
    • 50

    Increasing Clouds

    • 35
    • 54

    Mostly Cloudy

    • 44
    • 55

    Rain Showers

    • 41
    • 54

    Rain Showers

    • 36
    • 52

    Rain

    • 36
    • 53

    Chance Rain

    • 38
    • 58

    Partly Sunny

Today 21 Mar North Oregon Coast Range Lowlands

Sunny. Highs in the lower 50s. Northwest wind 5 to 10 Mph.

Tonight 21 Mar North Oregon Coast Range Lowlands

Mostly clear. Areas of frost in the Evening, then widespread frost with patchy fog after midnight. Lows in the lower 30s. Winds light in the Evening, becoming light and variable.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Knappa Slough - Knappa Temperature Statistics

March Temperature

Astoria, Astoria Regional Airport (13.7 miles)

  • Lowest 10 March, 2026

    31.6 °F

  • Average March

    48 °F

  • Highest 16 March, 2026

    61.6 °F

Climate (2021–Present)

Astoria, Astoria Regional Airport (13.7 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    59.7 °F
Get WillyWeather+ to remove ads