La Mesa Weather Forecast

    • 54
    • 81

    Sunny

    • 52
    • 83

    Mostly Sunny

    • 51
    • 75

    Partly Sunny

    • 51
    • 72

    Partly Sunny

    • 53
    • 76

    Mostly Sunny

    • 56
    • 82

    Mostly Sunny

Today 30 Jan San Diego County Inland Valleys

Sunny. Highs 82 to 85 in the western Valleys to 75 to 80 near the Foothills. Areas of Winds east 10 to 20 Mph. Gusts to 25 Mph. Becoming 40 Mph this afternoon.

Tonight 30 Jan San Diego County Inland Valleys

Clear. Lows 47 to 55 in wind Sheltered Areas to 52 to 59 in warmer Locations. Areas of Winds east 15 to 25 Mph with Gusts to 40 Mph. Becoming 10 to 15 Mph with Gusts to 30 Mph overnight.

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La Mesa Temperature Statistics

January Temperature

Gillespie Field Airport (5 miles)

  • Lowest 10 January, 2026

    35.6 °F

  • Average January

    53 °F

  • Highest 14 January, 2026

    82.4 °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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