Rio Vista Park Weather Forecast

    • 68
    • 85

    Mostly Cloudy

    • 69
    • 86

    Partly Sunny

    • 69
    • 91

    Mostly Sunny

    • 75
    • 95

    Mostly Sunny

    • 72
    • 92

    Partly Sunny

    • 71
    • 88

    Partly Sunny

Today 12 Jul Orange County Inland

Mostly cloudy this morning. Becoming partly cloudy. Patchy fog this morning. Highs around 80 towards the coast to 82 to 86 farther inland. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 12 Jul Orange County Inland

Partly cloudy. Patchy dense fog overnight. Lows 62 to 68. Areas of Winds southwest to 10 Mph this evening becoming light.

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Rio Vista Park Temperature Statistics

July Temperature

Fullerton, Fullerton Municipal Airport (6.8 miles)

  • Lowest 3 July, 2026

    61.6 °F

  • Average July

    73.8 °F

  • Highest 6 July, 2026

    87.7 °F

Climate (2021–2026)

Fullerton, Fullerton Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    57 °F

  • Average 2021–2026

    66.5 °F

  • Average High 2021–2026

    76.8 °F
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