Sleepy Valley Weather Forecast

    • 58
    • 81

    Sunny

    • 50
    • 79

    Mostly Sunny

    • 50
    • 67

    Mostly Sunny

    • 54
    • 76

    Mostly Sunny

    • 54
    • 78

    Mostly Sunny

    • 51
    • 73

    Partly Sunny

    • 51
    • 71

    Partly Sunny

Today 20 Oct Western San Gabriel Mountains and Highway 14 Corridor

Sunny. Highs from the upper 70s to mid 80s at low Elevations to the upper 60s to mid 70s at high Elevations.

Tonight 20 Oct Western San Gabriel Mountains and Highway 14 Corridor

Clear. Lows in the mid 50s to lower 60s.

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Sleepy Valley Temperature Statistics

October Temperature

Los Angeles, Whiteman Airport (18 miles)

  • Lowest 14 October, 2025

    51.8 °F

  • Average October

    71.5 °F

  • Highest 10 October, 2025

    89.6 °F

Climate (2020–Present)

Los Angeles, Whiteman Airport (18 miles)

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  • Average Low 2020–2025

    59.9 °F

  • Average 2020–2025

    69.8 °F

  • Average High 2020–2025

    76 °F
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