Rio Vista Park Weather Forecast

    • 69
    • 89

    Mostly Sunny

    • 68
    • 88

    Partly Sunny

    • 68
    • 87

    Mostly Sunny

    • 68
    • 88

    Mostly Sunny

    • 70
    • 92

    Mostly Sunny

    • 70
    • 94

    Mostly Sunny

Today 27 Jul Orange County Inland

Partly cloudy in the morning. Becoming mostly sunny. Highs 83 to 86 towards the coast to 90 farther inland. Light Winds becoming southwest 10 Mph in the afternoon.

Tonight 27 Jul Orange County Inland

Mostly clear in the evening. Becoming partly cloudy. Lows 62 to 68. Areas of Winds south 10 Mph in the 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

    76.7 °F

  • Highest 15 July, 2026

    92.6 °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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