Mira Costa Weather Forecast

    • 68
    • 84

    Increasing Clouds

    • 68
    • 80

    Chance Rain Showers

    • 69
    • 80

    Chance Rain Showers

    • 66
    • 78

    Slight Chance Thunderstorms

    • 66
    • 79

    Mostly Cloudy

    • 67
    • 79

    Mostly Cloudy

Today 16 Sep San Diego County Coastal Areas

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 77 to 82 near the coast to 85 to 90 inland. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 16 Sep San Diego County Coastal Areas

Partly cloudy. Lows 66 to 69. Areas of Winds northwest 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mira Costa Temperature Statistics

September Temperature

Oceanside, Oceanside Municipal Airport (2.5 miles)

  • Lowest 13 September, 2025

    57.9 °F

  • Average September

    69.9 °F

  • Highest 2 September, 2025

    82 °F

Climate (2020–Present)

Oceanside, Oceanside Municipal Airport (2.5 miles)

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  • Average Low 2020–2025

    52.7 °F

  • Average 2020–2025

    62.3 °F

  • Average High 2020–2025

    71.8 °F
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