La Mesa Weather Forecast

    • 59
    • 73

    Increasing Clouds

    • 61
    • 75

    Becoming Sunny

    • 64
    • 78

    Patchy Fog

    • 64
    • 80

    Partly Sunny

    • 62
    • 79

    Partly Sunny

    • 61
    • 78

    Partly Sunny

    • 62
    • 75

    Partly Sunny

Today 21 Jun San Diego County Inland Valleys

Partly cloudy with patchy fog this morning. Becoming sunny. Highs 73 to 76 in the western Valleys to 76 to 81 near the Foothills. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 21 Jun San Diego County Inland Valleys

Mostly clear this evening. Becoming partly cloudy. Patchy fog overnight. Lows 52 to 57. Areas of Winds west to 10 Mph this evening becoming light.

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La Mesa Temperature Statistics

June Temperature

Gillespie Field Airport (5 miles)

  • Lowest 9 June, 2026

    55.4 °F

  • Average June

    66.8 °F

  • Highest 12 June, 2026

    93.2 °F

Climate (2021–2026)

Gillespie Field Airport (5 miles)

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  • Average Low 2021–2026

    53.5 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    76.2 °F
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