San Joaquin Reservoir Weather Forecast

    • 67
    • 79

    Decreasing Clouds

    • 66
    • 78

    Partly Sunny

    • 66
    • 78

    Partly Sunny

    • 68
    • 78

    Partly Sunny

    • 69
    • 81

    Partly Sunny

    • 69
    • 83

    Partly Sunny

Today 27 Jul Orange County Coastal

Partly cloudy this morning. Becoming mostly sunny. Highs 75 to 80 at the Beaches to 82 to 87 farther inland and near higher coastal Terrain. Areas of Winds southwest to 10 Mph.

Tonight 27 Jul Orange County Coastal

Mostly clear in the evening. Becoming partly cloudy. Lows 65 to 69. Areas of Winds south 10 Mph in the 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, 2026

    62.7 °F

  • Average July

    73.8 °F

  • Highest 15 July, 2026

    86.6 °F

Climate (2021–2026)

John Wayne-Orange County Airport (4.3 miles)

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  • Average Low 2021–2026

    59 °F

  • Average 2021–2026

    66 °F

  • Average High 2021–2026

    73.7 °F
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