Upper Oso Reservoir Weather Forecast

    • 61
    • 86

    Mostly Sunny

    • 59
    • 84

    Mostly Sunny

    • 58
    • 81

    Patchy Fog

    • 58
    • 78

    Patchy Fog

    • 56
    • 74

    Mostly Sunny

    • 56
    • 75

    Patchy Fog

    • 56
    • 76

    Mostly Sunny

Today 17 Jun Orange County Inland

Mostly sunny. Highs 81 to 84 towards the coast to 90 farther inland. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 17 Jun Orange County Inland

Mostly clear. Lows 59 to 64. Areas of Winds south 10 Mph this evening becoming light.

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  • Temperature Real-Time

Upper Oso Reservoir Temperature Statistics

June Temperature

John Wayne-Orange County Airport (13.7 miles)

  • Lowest 3 June, 2025

    60.7 °F

  • Average June

    68 °F

  • Highest 1 June, 2025

    87.7 °F

Climate (2020–Present)

John Wayne-Orange County Airport (13.7 miles)

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  • Average Low 2020–2025

    58.7 °F

  • Average 2020–2025

    65.6 °F

  • Average High 2020–2025

    73.6 °F
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