Rio Vista Park Weather Forecast

    • 53
    • 73

    Chance Rain Showers

    • 53
    • 72

    Partly Sunny

    • 55
    • 77

    Partly Sunny

    • 56
    • 74

    Partly Sunny

    • 54
    • 70

    Mostly Cloudy

    • 54
    • 71

    Partly Sunny

Today 21 Apr Orange County Inland

Partly cloudy. A slight chance of Showers this afternoon. Highs 70 to 73. Areas of Winds south to 10 Mph becoming southwest with Gusts to 25 Mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight 21 Apr Orange County Inland

Mostly cloudy. A chance of Showers this evening. Lows 49 to 54. Areas of Winds west 10 to 15 Mph. Gusts to 25 Mph this evening. Chance of measurable precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rio Vista Park Temperature Statistics

April Temperature

Fullerton, Fullerton Municipal Airport (6.8 miles)

  • Lowest 4 April, 2026

    52.6 °F

  • Average April

    67.3 °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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