South Whittier Weather Forecast

    • 48
    • 61

    Patchy Fog

    • 46
    • 65

    Mostly Sunny

    • 44
    • 64

    Patchy Fog

    • 45
    • 68

    Mostly Sunny

    • 44
    • 67

    Partly Sunny

    • 47
    • 70

    Mostly Sunny

    • 46
    • 73

    Mostly Sunny

Today 17 Jan Los Angeles County San Gabriel Valley

Low Clouds and fog in the morning then sunny. Highs in the mid 50s to lower 60s.

Tonight 17 Jan Los Angeles County San Gabriel Valley

Clear in the evening then partly cloudy. Lows in the lower to mid 40s.

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South Whittier Temperature Statistics

January Temperature

Fullerton, Fullerton Municipal Airport (5 miles)

  • Lowest 14 January, 2025

    39.9 °F

  • Average January

    58 °F

  • Highest 5 January, 2025

    77.6 °F

Climate (2020–Present)

Fullerton, Fullerton Municipal Airport (5 miles)

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  • Average Low 2020–2025

    56.9 °F

  • Average 2020–2025

    66.1 °F

  • Average High 2020–2025

    76.9 °F
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