Harbison Canyon Weather Forecast

    • 55
    • 82

    Mostly Sunny

    • 56
    • 83

    Mostly Sunny

    • 53
    • 80

    Partly Sunny

    • 50
    • 68

    Partly Sunny

    • 55
    • 74

    Mostly Sunny

    • 54
    • 79

    Patchy Fog

    • 54
    • 75

    Partly Sunny

Today 19 Oct San Diego County Inland Valleys

Mostly sunny. Highs 82 to 87. Areas of Winds east to 10 Mph becoming west with Gusts to 25 Mph this afternoon.

Tonight 19 Oct San Diego County Inland Valleys

Mostly clear. Lows 50 to 55. Areas of Winds west to 10 Mph becoming northeast overnight.

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Harbison Canyon Temperature Statistics

October Temperature

Gillespie Field Airport (8.1 miles)

  • Lowest 16 October, 2025

    48.2 °F

  • Average October

    63.4 °F

  • Highest 10 October, 2025

    84.2 °F

Climate (2020–Present)

Gillespie Field Airport (8.1 miles)

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  • Average Low 2020–2025

    52.9 °F

  • Average 2020–2025

    60.1 °F

  • Average High 2020–2025

    75.7 °F
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