La Mesa Weather Forecast

    • 68
    • 86

    Decreasing Clouds

    • 71
    • 92

    Partly Sunny

    • 68
    • 89

    Partly Sunny

    • 67
    • 84

    Partly Sunny

    • 68
    • 85

    Partly Sunny

    • 67
    • 85

    Partly Sunny

Today 14 Jul San Diego County Inland Valleys

Partly cloudy in the morning. Becoming sunny. Highs 83 to 88 in the western Valleys to 91 to 96 near the Foothills. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph in the afternoon.

Tonight 14 Jul San Diego County Inland Valleys

Mostly clear in the evening. Becoming partly cloudy. Lows 65 to 70. Areas of Winds west to 10 Mph in the evening becoming light.

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La Mesa Temperature Statistics

July Temperature

Gillespie Field Airport (5 miles)

  • Lowest 2 July, 2026

    60.8 °F

  • Average July

    68.3 °F

  • Highest 4 July, 2026

    91.4 °F

Climate (2021–2026)

Gillespie Field Airport (5 miles)

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  • Average Low 2021–2026

    53.4 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    76.2 °F
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