San Joaquin Reservoir Weather Forecast

    • 54
    • 67

    Partly Sunny

    • 54
    • 68

    Mostly Cloudy

    • 55
    • 68

    Partly Sunny

    • 56
    • 71

    Mostly Sunny

    • 56
    • 73

    Partly Sunny

    • 55
    • 70

    Mostly Cloudy

Today 28 Apr Orange County Coastal

Mostly cloudy in the morning. Becoming mostly sunny. Highs around 67 at the Beaches to 69 to 72 farther inland and near higher coastal Terrain. Areas of Winds southwest to 10 Mph becoming west with Gusts to 30 Mph in the afternoon.

Tonight 28 Apr Orange County Coastal

Mostly clear in the evening. Becoming partly cloudy. Lows 50 to 54. Areas of Winds west 10 to 15 Mph with Gusts to 25 Mph in the evening becoming light.

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  • Temperature Real-Time

San Joaquin Reservoir Temperature Statistics

April Temperature

John Wayne-Orange County Airport (4.3 miles)

  • Lowest 4 April, 2026

    55.7 °F

  • Average April

    66.8 °F

  • Highest 4 April, 2026

    86.6 °F

Climate (2021–Present)

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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