Rio Vista Park Weather Forecast

    • 72
    • 96

    Mostly Sunny

    • 73
    • 97

    Hot

    • 76
    • 101

    Hot

    • 75
    • 100

    Hot

    • 75
    • 99

    Hot

    • 74
    • 97

    Hot

Today 24 Aug Orange County Inland

Mostly sunny. Highs 88 to 92 towards the coast to 94 to 97 farther inland. Light Winds becoming southwest 10 Mph in the afternoon.

Tonight 24 Aug Orange County Inland

Mostly clear. Patchy fog overnight. Local visibility one quarter mile or less at Times overnight. Lows 69 to 73. Areas of Winds south to 10 Mph in the evening becoming light.

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Rio Vista Park Temperature Statistics

August Temperature

Fullerton, Fullerton Municipal Airport (6.8 miles)

  • Lowest 16 August, 2026

    66.7 °F

  • Average August

    79.9 °F

  • Highest 8 August, 2026

    97.6 °F

Climate (2021–2026)

Fullerton, Fullerton Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    57.1 °F

  • Average 2021–2026

    66.6 °F

  • Average High 2021–2026

    76.8 °F
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