San Joaquin Reservoir Weather Forecast

    • 53
    • 63

    Chance Rain Showers

    • 53
    • 67

    Mostly Sunny

    • 54
    • 68

    Mostly Cloudy

    • 54
    • 67

    Partly Sunny

    • 54
    • 72

    Mostly Sunny

    • 56
    • 75

    Partly Sunny

    • 54
    • 71

    Mostly Sunny

Today 13 Apr Orange County Coastal

Partly cloudy with a chance of Showers this Morning, then mostly sunny with a slight chance of Showers this afternoon. Highs 62 to 66. Areas of Winds west 10 to 20 Mph with Gusts to 30 Mph. Chance of measurable precipitation 50 percent.

Tonight 13 Apr Orange County Coastal

Mostly clear this evening. Becoming partly cloudy. Lows around 52. Areas of Winds west 10 to 15 Mph. Gusts to 30 Mph this evening.

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  • Temperature Forecast NOAA

  • 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

    68 °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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