Oceanside Weather Forecast

    • 58
    • 64

    Dense Fog

    • 58
    • 65

    Mostly Cloudy

    • 59
    • 64

    Chance Rain Showers

    • 59
    • 64

    Chance Rain Showers

    • 58
    • 64

    Chance Rain Showers

    • 59
    • 64

    Rain Showers Likely

    • 58
    • 63

    Rain Showers Likely

Today 3 Sep South Washington Coast

Mostly cloudy this Morning, then becoming partly sunny. Areas of dense fog this morning. Highs in the lower 70s. Northwest wind 5 to 10 Mph.

Tonight 3 Sep South Washington Coast

Mostly cloudy. Areas of dense fog. A slight chance of Showers after midnight. Lows in the upper 50s. Northwest wind 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Oceanside Temperature Statistics

September Temperature

Astoria, Astoria Regional Airport (18.6 miles)

  • Lowest 1 September, 2025

    57 °F

  • Average September

    63.1 °F

  • Highest 1 September, 2025

    70 °F

Climate (2020–Present)

Astoria, Astoria Regional Airport (18.6 miles)

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  • Average Low 2020–2025

    45.7 °F

  • Average 2020–2025

    52.3 °F

  • Average High 2020–2025

    59.5 °F
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