Otay Ranch Weather Forecast

    • 59
    • 74

    Partly Sunny

    • 60
    • 77

    Partly Sunny

    • 64
    • 79

    Mostly Sunny

    • 65
    • 83

    Mostly Sunny

    • 66
    • 83

    Mostly Sunny

    • 65
    • 87

    Partly Sunny

Today 21 Sep San Diego County Inland Valleys

Mostly cloudy this morning. Becoming mostly sunny. Patchy fog this morning. Highs 77 to 82. Light Winds becoming west 10 Mph this afternoon.

Tonight 21 Sep San Diego County Inland Valleys

Partly cloudy. Patchy fog overnight. Lows 52 to 61. Areas of Winds west to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Otay Ranch Temperature Statistics

September Temperature

San Diego, Brown Field Municipal Airport (7.5 miles)

  • Lowest 3 September, 2026

    56.6 °F

  • Average September

    76.4 °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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