Black Mountain Open Space Park Weather Forecast

    • 61
    • 77

    Increasing Clouds

    • 62
    • 75

    Increasing Clouds

    • 60
    • 74

    Partly Sunny

    • 62
    • 74

    Mostly Sunny

    • 63
    • 80

    Mostly Sunny

    • 65
    • 82

    Mostly Sunny

    • 66
    • 83

    Mostly Sunny

Today 19 Sep San Diego County Inland Valleys

Partly cloudy in the morning. Becoming mostly sunny. Highs 87 to 92.

Tonight 19 Sep San Diego County Inland Valleys

Mostly clear this evening. Becoming mostly cloudy. Lows 57 to 62. Areas of Winds west to 10 Mph this evening becoming light.

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Black Mountain Open Space Park Temperature Statistics

September Temperature

San Diego, Miramar MCAS/Mitscher Field Airport (8.1 miles)

  • Lowest 3 September, 2026

    57 °F

  • Average September

    75 °F

  • Highest 9 September, 2026

    104 °F

Climate (2021–2026)

San Diego, Miramar MCAS/Mitscher Field Airport (8.1 miles)

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  • Average Low 2021–2026

    53 °F

  • Average 2021–2026

    62.1 °F

  • Average High 2021–2026

    72.5 °F
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