La Mesa Weather Forecast

    • 61
    • 70

    Rain Showers

    • 58
    • 69

    Rain Showers

    • 55
    • 72

    Mostly Sunny

    • 59
    • 76

    Mostly Sunny

    • 64
    • 85

    Sunny

    • 69
    • 90

    Mostly Sunny

    • 66
    • 89

    Mostly Sunny

Today 11 Oct San Diego County Inland Valleys

Mostly sunny. Highs around 90 in the western Valleys to 80 to 85 near the Foothills.

Tonight 11 Oct San Diego County Inland Valleys

Cloudy with Showers. Lows 51 to 58. Areas of Winds south 10 to 15 Mph.

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La Mesa Temperature Statistics

October Temperature

Gillespie Field Airport (5 miles)

  • Lowest 1 October, 2026

    60.8 °F

  • Average October

    77.7 °F

  • Highest 3 October, 2026

    105.8 °F

Climate (2021–2026)

Gillespie Field Airport (5 miles)

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  • Average Low 2021–2026

    53.6 °F

  • Average 2021–2026

    60.7 °F

  • Average High 2021–2026

    76.5 °F
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