Rio Vista Park Weather Forecast

    • 45
    • 70

    Breezy

    • 48
    • 74

    Breezy

    • 49
    • 74

    Mostly Sunny

    • 51
    • 76

    Sunny

    • 52
    • 79

    Sunny

    • 53
    • 79

    Mostly Sunny

    • 52
    • 78

    Mostly Sunny

Today 10 Jan Orange County Inland

Sunny. Areas of blowing dust. Highs around 70. Areas of Winds northeast 25 to 35 Mph with Gusts to 55 Mph.

Tonight 10 Jan Orange County Inland

Clear. Lows 41 to 46. Areas of Winds northeast 25 to 35 Mph. Gusts to 55 Mph. Becoming 50 Mph overnight.

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Rio Vista Park Temperature Statistics

January Temperature

Fullerton, Fullerton Municipal Airport (6.8 miles)

  • Lowest 8 January, 2026

    45 °F

  • Average January

    58.1 °F

  • Highest 7 January, 2026

    68 °F

Climate (2021–Present)

Fullerton, Fullerton Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    56.9 °F

  • Average 2021–2026

    66.1 °F

  • Average High 2021–2026

    76.4 °F
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