La Mesa Weather Forecast

    • 51
    • 77

    Sunny

    • 53
    • 79

    Mostly Sunny

    • 53
    • 81

    Mostly Sunny

    • 54
    • 79

    Mostly Sunny

    • 53
    • 80

    Partly Sunny

    • 53
    • 79

    Partly Sunny

Today 13 Jan San Diego County Inland Valleys

Sunny. Highs around 80 in the western Valleys to 71 to 76 near the Foothills. Areas of Winds east 10 to 15 Mph with Gusts to 30 Mph becoming west 15 to 25 Mph with Gusts to 40 Mph this afternoon.

Tonight 13 Jan San Diego County Inland Valleys

Clear. Lows 45 to 52 in wind Sheltered Areas to 49 to 55 in warmer Locations. Areas of Winds east to 10 Mph.

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La Mesa Temperature Statistics

January Temperature

Gillespie Field Airport (5 miles)

  • Lowest 10 January, 2026

    35.6 °F

  • Average January

    55.2 °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

    60.3 °F

  • Average High 2021–2026

    75.8 °F
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