La Mesa Weather Forecast

    • 72
    • 100

    Hot

    • 71
    • 96

    Mostly Sunny

    • 69
    • 95

    Mostly Sunny

    • 69
    • 92

    Mostly Sunny

    • 67
    • 87

    Partly Sunny

    • 64
    • 80

    Chance Rain Showers

Today 6 Oct San Diego County Inland Valleys

Sunny, hot. Highs 98 to 102 in the western Valleys to 94 to 99 near the Foothills. Areas of Winds east to 10 Mph becoming west this afternoon.

Tonight 6 Oct San Diego County Inland Valleys

Mostly clear. Lows 67 to 72. Areas of Winds northwest to 10 Mph in the evening becoming light.

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La Mesa Temperature Statistics

October Temperature

Gillespie Field Airport (5 miles)

  • Lowest 1 October, 2026

    60.8 °F

  • Average October

    76.8 °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

    76.4 °F
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