La Mesa Weather Forecast

    • 42
    • 53

    Increasing Clouds

    • 57
    • 65

    Chance Thunderstorms

    • 63
    • 73

    Chance Rain Showers

    • 54
    • 78

    Partly Sunny

    • 57
    • 67

    Partly Sunny

    • 66
    • 78

    Mostly Cloudy

Today 15 Dec Coastal Harris

Patchy frost in the morning. Sunny. Highs in the lower 50s. Northeast Winds 5 to 10 Mph.

Tonight 15 Dec Coastal Harris

Partly cloudy in the Evening, then becoming mostly cloudy. Lows around 40. East Winds around 5 Mph.

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La Mesa Temperature Statistics

December Temperature

Houston / Ellington (5 miles)

  • Lowest 2 December, 2025

    39.2 °F

  • Average December

    53.9 °F

  • Highest 10 December, 2025

    75.2 °F

Climate (2020–Present)

Houston / Ellington (5 miles)

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  • Average Low 2020–2025

    63.8 °F

  • Average 2020–2025

    71.5 °F

  • Average High 2020–2025

    79.9 °F
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