Oak Oasis County Park Weather Forecast

    • 67
    • 82

    Chance Thunderstorms

    • 63
    • 83

    Chance Thunderstorms

    • 63
    • 83

    Slight Chance Thunderstorms

    • 63
    • 85

    Mostly Sunny

    • 65
    • 87

    Partly Sunny

    • 65
    • 88

    Mostly Sunny

Today 17 Sep San Diego County Inland Valleys

Mostly cloudy. A slight chance of Showers and Thunderstorms this afternoon. Highs 81 to 86. Areas of Winds west to 10 Mph. Chance of measurable precipitation 20 percent.

Tonight 17 Sep San Diego County Inland Valleys

Mostly cloudy in the evening. Becoming partly cloudy. A chance of Showers and a slight chance of Thunderstorms. Lows 66 to 69. Areas of Winds northwest 10 Mph in the evening becoming light. Chance of measurable precipitation 50 percent.

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Oak Oasis County Park Temperature Statistics

September Temperature

Gillespie Field Airport (7.5 miles)

  • Lowest 6 September, 2025

    62.6 °F

  • Average September

    71.7 °F

  • Highest 7 September, 2025

    95 °F

Climate (2020–Present)

Gillespie Field Airport (7.5 miles)

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  • Average Low 2020–2025

    52.9 °F

  • Average 2020–2025

    60.2 °F

  • Average High 2020–2025

    75.9 °F
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