Otay Ranch Weather Forecast

    • 57
    • 75

    Decreasing Clouds

    • 62
    • 76

    Mostly Sunny

    • 63
    • 81

    Mostly Sunny

    • 68
    • 87

    Mostly Sunny

    • 71
    • 91

    Sunny

    • 71
    • 91

    Sunny

Today 28 Sep San Diego County Inland Valleys

Partly cloudy this morning. Becoming sunny. Highs 78 to 83. Areas of Winds southwest to 10 Mph becoming west this afternoon.

Tonight 28 Sep San Diego County Inland Valleys

Mostly clear. Cooler. Lows 52 to 59. Areas of Winds west to 10 Mph in the evening becoming light.

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Otay Ranch Temperature Statistics

September Temperature

San Diego, Brown Field Municipal Airport (7.5 miles)

  • Lowest 3 September, 2026

    56.6 °F

  • Average September

    75.5 °F

  • Highest 9 September, 2026

    100.7 °F

Climate (2021–2026)

San Diego, Brown Field Municipal Airport (7.5 miles)

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  • Average Low 2021–2026

    54.3 °F

  • Average 2021–2026

    64 °F

  • Average High 2021–2026

    74.4 °F
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