Sun Valley Weather Forecast

    • 51
    • 80

    Becoming Sunny

    • 53
    • 83

    Sunny

    • 50
    • 80

    Sunny

    • 49
    • 77

    Partly Sunny

    • 49
    • 76

    Mostly Cloudy

    • 48
    • 76

    Mostly Cloudy

Today 17 Dec Western San Fernando Valley

Partly cloudy in the morning then sunny. Highs in the upper 70s to mid 80s. North Winds 15 to 25 Mph.

Tonight 17 Dec Western San Fernando Valley

Mostly clear. Lows in the 50s to lower 60s. North Winds 20 to 30 Mph with Gusts to 40 Mph decreasing to 15 to 25 Mph after midnight.

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Sun Valley Temperature Statistics

December Temperature

Los Angeles, Whiteman Airport (1.9 miles)

  • Lowest 1 December, 2025

    51.8 °F

  • Average December

    69.2 °F

  • Highest 10 December, 2025

    84.2 °F

Climate (2020–Present)

Los Angeles, Whiteman Airport (1.9 miles)

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  • Average Low 2020–2025

    60 °F

  • Average 2020–2025

    69.9 °F

  • Average High 2020–2025

    76.1 °F
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