Santa Margarita River Mouth Weather Forecast

    • 59
    • 72

    Mostly Sunny

    • 57
    • 69

    Partly Sunny

    • 57
    • 66

    Patchy Fog

    • 59
    • 68

    Patchy Fog

    • 60
    • 70

    Patchy Fog

    • 58
    • 70

    Patchy Fog

    • 57
    • 68

    Mostly Sunny

Today 29 Oct San Diego County Coastal Areas

Patchy fog this morning. Mostly sunny. Local visibility one quarter mile or less at Times this morning. Warmer. Highs 79 to 84 near the coast to 87 to 92 inland. Areas of Winds northeast to 10 Mph becoming northwest 10 Mph this afternoon.

Tonight 29 Oct San Diego County Coastal Areas

Mostly clear. Patchy fog overnight. Local visibility one quarter mile or less at Times overnight. Lows 56 to 61. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Santa Margarita River Mouth Temperature Statistics

October Temperature

Oceanside, Oceanside Municipal Airport (3.7 miles)

  • Lowest 16 October, 2025

    46.9 °F

  • Average October

    64.3 °F

  • Highest 18 October, 2025

    80.1 °F

Climate (2020–Present)

Oceanside, Oceanside Municipal Airport (3.7 miles)

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  • Average Low 2020–2025

    52.7 °F

  • Average 2020–2025

    62.3 °F

  • Average High 2020–2025

    71.6 °F
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