Big Canyon Reservoir Weather Forecast

    • 58
    • 64

    Rain Showers

    • 57
    • 63

    Rain Showers

    • 53
    • 62

    Rain Showers

    • 48
    • 59

    Rain Showers Likely

    • 47
    • 59

    Slight Chance Rain Showers

    • 50
    • 62

    Mostly Sunny

Today 23 Dec Orange County Coastal

Cloudy. Patchy fog this morning. A slight chance of Showers this Morning, then a chance of Showers this afternoon. Highs 63 to 66. Areas of Winds southeast 10 to 15 Mph with Gusts to 25 Mph. Chance of measurable precipitation 30 percent.

Tonight 23 Dec Orange County Coastal

Showers likely in the Evening, then rain and a slight chance of Thunderstorms overnight. Rain may be heavy at Times overnight. Lows 56 to 59. Areas of Winds southeast 15 to 25 Mph. Gusts to 30 Mph. Becoming 40 Mph overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Canyon Reservoir Temperature Statistics

December Temperature

John Wayne-Orange County Airport (4.3 miles)

  • Lowest 6 December, 2025

    48 °F

  • Average December

    59.6 °F

  • Highest 9 December, 2025

    82 °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

    73.3 °F
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