La Mesa Weather Forecast

    • 68
    • 88

    Mostly Sunny

    • 69
    • 89

    Mostly Sunny

    • 68
    • 90

    Mostly Sunny

    • 65
    • 87

    Patchy Fog

    • 62
    • 82

    Patchy Fog

    • 62
    • 80

    Patchy Fog

Today 26 Sep San Diego County Inland Valleys

Mostly sunny. Highs in the lower 90s this western Valleys to this upper 90s near the Foothills. Light Winds becoming west 15 Mph this afternoon.

Tonight 26 Sep San Diego County Inland Valleys

Mostly clear. Lows in the upper 60s. Light Winds.

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La Mesa Temperature Statistics

September Temperature

Gillespie Field Airport (5 miles)

  • Lowest 22 September, 2022

    55.4 °F

  • Average September

    74.6 °F

  • Highest 3 September, 2022

    100.4 °F

Climate (2010–Present)

Gillespie Field Airport (5 miles)

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  • Average Low 2010–Present

    53.7 °F

  • Average 2010–Present

    61.1 °F

  • Average High 2010–Present

    76.9 °F
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