South Whittier Weather Forecast

    • 71
    • 104

    Hot

    • 71
    • 103

    Hot

    • 78
    • 103

    Hot

    • 76
    • 99

    Hot

    • 74
    • 98

    Hot

    • 72
    • 96

    Mostly Sunny

Today 3 Oct Los Angeles County San Gabriel Valley

Sunny. Highs 99 to 107.

Tonight 3 Oct Los Angeles County San Gabriel Valley

Clear. Lows in the upper 60s to mid 70s except around 80 in the Hills.

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South Whittier Temperature Statistics

October Temperature

Fullerton, Fullerton Municipal Airport (5 miles)

  • Lowest 1 October, 2026

    66 °F

  • Average October

    74.6 °F

  • Highest 1 October, 2026

    88 °F

Climate (2021–2026)

Fullerton, Fullerton Municipal Airport (5 miles)

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  • Average Low 2021–2026

    57.2 °F

  • Average 2021–2026

    66.7 °F

  • Average High 2021–2026

    76.9 °F
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