San Joaquin Reservoir Weather Forecast

    • 52
    • 72

    Mostly Sunny

    • 53
    • 71

    Sunny

    • 55
    • 73

    Sunny

    • 55
    • 74

    Mostly Sunny

    • 56
    • 74

    Partly Sunny

    • 55
    • 74

    Partly Sunny

Today 12 Jan Orange County Coastal

Mostly sunny. Highs 71 to 75. Areas of Winds northeast 10 Mph becoming northwest this afternoon. Gusts to 25 Mph.

Tonight 12 Jan Orange County Coastal

Clear. Lows 49 to 53. Areas of Winds northeast 10 to 15 Mph. Gusts to 25 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Joaquin Reservoir Temperature Statistics

January Temperature

John Wayne-Orange County Airport (4.3 miles)

  • Lowest 8 January, 2026

    48 °F

  • Average January

    59.6 °F

  • Highest 2 January, 2026

    68 °F

Climate (2021–Present)

John Wayne-Orange County Airport (4.3 miles)

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  • Average Low 2021–2026

    58.8 °F

  • Average 2021–2026

    65.7 °F

  • Average High 2021–2026

    73.3 °F
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