La Mesita Park Weather Forecast

    • 62
    • 80

    Becoming Sunny

    • 61
    • 80

    Partly Sunny

    • 61
    • 81

    Mostly Sunny

    • 61
    • 81

    Mostly Sunny

    • 61
    • 82

    Mostly Sunny

    • 62
    • 81

    Partly Sunny

Today 15 Sep San Diego County Inland Valleys

Partly cloudy with patchy fog in the morning. Becoming mostly sunny. Highs 79 to 82 in the western Valleys to 82 to 87 near the Foothills. Light Winds becoming southwest 10 Mph in the afternoon.

Tonight 15 Sep San Diego County Inland Valleys

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 54 to 60. Areas of Winds southwest to 10 Mph in the evening becoming light.

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La Mesita Park Temperature Statistics

September Temperature

Gillespie Field Airport (3.1 miles)

  • Lowest 3 September, 2026

    57.2 °F

  • Average September

    76.6 °F

  • Highest 9 September, 2026

    107.6 °F

Climate (2021–2026)

Gillespie Field Airport (3.1 miles)

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  • Average Low 2021–2026

    53.6 °F

  • Average 2021–2026

    60.6 °F

  • Average High 2021–2026

    76.3 °F
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