Rio Vista Park Weather Forecast

    • 54
    • 73

    Becoming Sunny

    • 54
    • 75

    Partly Sunny

    • 53
    • 73

    Partly Sunny

    • 54
    • 81

    Mostly Sunny

    • 55
    • 82

    Partly Sunny

    • 55
    • 81

    Partly Sunny

Today 14 Apr Orange County Inland

Partly cloudy this morning. Becoming sunny. Highs 70 to 73. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 14 Apr Orange County Inland

Mostly clear. Lows 49 to 54. Areas of Winds west to 10 Mph in the evening becoming light.

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Rio Vista Park Temperature Statistics

April Temperature

Fullerton, Fullerton Municipal Airport (6.8 miles)

  • Lowest 4 April, 2026

    52.6 °F

  • Average April

    68.2 °F

  • Highest 4 April, 2026

    91.7 °F

Climate (2021–Present)

Fullerton, Fullerton Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    57 °F

  • Average 2021–2026

    66.4 °F

  • Average High 2021–2026

    76.8 °F
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