La Mesa Weather Forecast

    • 61
    • 80

    Increasing Clouds

    • 62
    • 78

    Rain Showers

    • 57
    • 69

    Rain Showers

    • 57
    • 71

    Mostly Sunny

    • 59
    • 79

    Mostly Sunny

    • 60
    • 81

    Partly Sunny

Today 20 Oct San Diego County Inland Valleys

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 79 to 84. Areas of Winds south to 10 Mph.

Tonight 20 Oct San Diego County Inland Valleys

Partly cloudy in the evening. Becoming mostly cloudy overnight with patchy fog. Lows 55 to 60. Light Winds.

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La Mesa Temperature Statistics

October Temperature

Gillespie Field Airport (5 miles)

  • Lowest 14 October, 2026

    50 °F

  • Average October

    73.1 °F

  • Highest 3 October, 2026

    105.8 °F

Climate (2021–2026)

Gillespie Field Airport (5 miles)

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  • Average Low 2021–2026

    53.7 °F

  • Average 2021–2026

    60.8 °F

  • Average High 2021–2026

    76.5 °F
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