Harry Griffen Regional Park Weather Forecast

    • 57
    • 84

    Mostly Sunny

    • 57
    • 80

    Partly Sunny

    • 55
    • 72

    Mostly Cloudy

    • 56
    • 76

    Mostly Sunny

    • 57
    • 80

    Partly Sunny

    • 57
    • 78

    Partly Sunny

    • 56
    • 75

    Partly Sunny

Today 20 Oct San Diego County Inland Valleys

Sunny. Highs 81 to 86. Light Winds becoming west 10 Mph this afternoon.

Tonight 20 Oct San Diego County Inland Valleys

Mostly clear. Lows 55 to 60. Light Winds.

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Harry Griffen Regional Park Temperature Statistics

October Temperature

Gillespie Field Airport (2.5 miles)

  • Lowest 16 October, 2025

    48.2 °F

  • Average October

    63.3 °F

  • Highest 18 October, 2025

    87.8 °F

Climate (2020–Present)

Gillespie Field Airport (2.5 miles)

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  • Average Low 2020–2025

    52.9 °F

  • Average 2020–2025

    60.1 °F

  • Average High 2020–2025

    75.8 °F
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