La Mesa Weather Forecast

    • 45
    • 64

    Mostly Sunny

    • 48
    • 68

    Mostly Sunny

    • 50
    • 73

    Mostly Sunny

    • 50
    • 74

    Mostly Sunny

    • 51
    • 76

    Mostly Sunny

    • 54
    • 79

    Mostly Sunny

Today 9 Jan San Diego County Inland Valleys

Mostly sunny. Areas of blowing dust. Highs 63 to 66 in the western Valleys to 55 to 60 near the Foothills. Areas of Winds northeast 20 to 30 Mph. Gusts to 45 Mph. Becoming 50 Mph in the afternoon.

Tonight 9 Jan San Diego County Inland Valleys

Mostly clear. Areas of blowing dust. Lows 40 to 45. Areas of Winds east 25 to 35 Mph with Gusts to 55 Mph.

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La Mesa Temperature Statistics

January Temperature

Gillespie Field Airport (5 miles)

  • Lowest 6 January, 2026

    50 °F

  • Average January

    58.9 °F

  • Highest 2 January, 2026

    71.6 °F

Climate (2021–Present)

Gillespie Field Airport (5 miles)

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  • Average Low 2021–2026

    53.2 °F

  • Average 2021–2026

    60.2 °F

  • Average High 2021–2026

    75.8 °F
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