La Mesa Weather Forecast

    • 67
    • 87

    Patchy Fog

    • 65
    • 84

    Becoming Sunny

    • 66
    • 84

    Mostly Sunny

    • 65
    • 84

    Mostly Sunny

    • 65
    • 84

    Partly Sunny

    • 67
    • 84

    Mostly Sunny

    • 68
    • 86

    Partly Sunny

Today 30 Aug San Diego County Inland Valleys

Mostly sunny. Highs 89 to 94. Areas of Winds southwest to 10 Mph becoming west with Gusts to 25 Mph this afternoon.

Tonight 30 Aug San Diego County Inland Valleys

Mostly clear this evening. Becoming partly cloudy. Patchy fog overnight. Lows 62 to 66. Areas of Winds southwest to 10 Mph this evening becoming light.

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La Mesa Temperature Statistics

August Temperature

Gillespie Field Airport (5 miles)

  • Lowest 3 August, 2026

    66.2 °F

  • Average August

    75.2 °F

  • Highest 23 August, 2026

    100.4 °F

Climate (2021–2026)

Gillespie Field Airport (5 miles)

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  • Average Low 2021–2026

    53.5 °F

  • Average 2021–2026

    60.6 °F

  • Average High 2021–2026

    76.3 °F
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