Old Topanga Weather Forecast

    • 60
    • 79

    Mostly Sunny

    • 62
    • 81

    Sunny

    • 63
    • 84

    Sunny

    • 62
    • 83

    Sunny

    • 53
    • 80

    Sunny

    • 53
    • 80

    Sunny

Today 13 Dec Eastern Santa Monica Mountains Recreational Area

Sunny except for patchy low Clouds and fog in the morning. Fog locally dense with visibility one quarter mile or less. Highs in the mid 70s to lower 80s except around 70 closer to the coast.

Tonight 13 Dec Eastern Santa Monica Mountains Recreational Area

Partly cloudy except for patchy low Clouds and fog. Fog locally dense with visibility one quarter mile or less. Lows in the upper 50s to mid 60s except around 40 Colder Valleys.

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Old Topanga Temperature Statistics

December Temperature

Van Nuys, Van Nuys Airport (9.9 miles)

  • Lowest 2 December, 2025

    43 °F

  • Average December

    62.1 °F

  • Highest 10 December, 2025

    84 °F

Climate (2020–Present)

Van Nuys, Van Nuys Airport (9.9 miles)

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  • Average Low 2020–2025

    56.5 °F

  • Average 2020–2025

    67.4 °F

  • Average High 2020–2025

    79.3 °F
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