Rio Vista Park Weather Forecast

    • 75
    • 101

    Hot

    • 75
    • 101

    Hot

    • 75
    • 100

    Hot

    • 72
    • 98

    Hot

    • 70
    • 96

    Mostly Sunny

    • 69
    • 91

    Partly Sunny

    • 66
    • 84

    Partly Sunny

Today 4 Oct Orange County Inland

Partly cloudy. Highs around 80.

Tonight 4 Oct Orange County Inland

Clear. Lows around 74. Light Winds becoming northeast to 10 Mph overnight.

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  • Temperature Real-Time

Rio Vista Park Temperature Statistics

October Temperature

Fullerton, Fullerton Municipal Airport (6.8 miles)

  • Lowest 2 October, 2026

    64.9 °F

  • Average October

    78.5 °F

  • Highest 2 October, 2026

    104 °F

Climate (2021–2026)

Fullerton, Fullerton Municipal Airport (6.8 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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