La Mesa Weather Forecast

    • 67
    • 84

    Increasing Clouds

    • 66
    • 81

    Mostly Cloudy

    • 65
    • 79

    Mostly Cloudy

    • 65
    • 79

    Mostly Cloudy

    • 65
    • 80

    Mostly Cloudy

    • 65
    • 81

    Partly Sunny

Today 11 Aug San Diego County Inland Valleys

Partly cloudy in the morning. Becoming mostly sunny. Patchy dense fog in the morning. Highs 83 to 88 in the western Valleys to 86 to 91 near the Foothills. Light Winds becoming west 10 Mph in the afternoon.

Tonight 11 Aug San Diego County Inland Valleys

Partly cloudy. Patchy dense fog. Lows 61 to 66. Areas of Winds west 10 Mph in the evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

La Mesa Temperature Statistics

August Temperature

Gillespie Field Airport (5 miles)

  • Lowest 3 August, 2026

    66.2 °F

  • Average August

    73.8 °F

  • Highest 2 August, 2026

    93.2 °F

Climate (2021–2026)

Gillespie Field Airport (5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    53.5 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    76.2 °F
Get WillyWeather+ to remove ads