San Joaquin Reservoir Weather Forecast

    • 61
    • 74

    Increasing Clouds

    • 60
    • 73

    Partly Sunny

    • 61
    • 73

    Partly Sunny

    • 63
    • 76

    Patchy Fog

    • 64
    • 77

    Patchy Fog

    • 64
    • 76

    Patchy Fog

    • 63
    • 74

    Mostly Sunny

Today 5 Jul Orange County Coastal

Mostly cloudy this morning. Becoming mostly sunny. Patchy fog this morning. Highs 73 to 76 at the Beaches to 80 farther inland and near higher coastal Terrain. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 5 Jul Orange County Coastal

Mostly clear this evening. Becoming partly cloudy. Patchy fog overnight. Lows 59 to 62. Areas of Winds west 10 Mph this evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Joaquin Reservoir Temperature Statistics

July Temperature

John Wayne-Orange County Airport (4.3 miles)

  • Lowest 3 July, 2025

    61 °F

  • Average July

    67.1 °F

  • Highest 1 July, 2025

    73.9 °F

Climate (2020–Present)

John Wayne-Orange County Airport (4.3 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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