Walnut Canyon Reservoir Weather Forecast

    • 54
    • 73

    Mostly Cloudy

    • 52
    • 73

    Becoming Sunny

    • 53
    • 76

    Mostly Sunny

    • 53
    • 75

    Mostly Sunny

    • 54
    • 75

    Mostly Sunny

    • 54
    • 76

    Mostly Sunny

    • 55
    • 79

    Mostly Sunny

Today 12 May Orange County Inland

Mostly cloudy this morning. Becoming partly cloudy. Patchy fog this morning. Highs around 72 towards the coast to 73 to 76 farther inland. Areas of Winds south to 10 Mph becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 12 May Orange County Inland

Mostly cloudy. Lows 52 to 57. Areas of Winds south 10 Mph this evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Walnut Canyon Reservoir Temperature Statistics

May Temperature

Corona Airport (9.3 miles)

  • Lowest 6 May, 2026

    44.1 °F

  • Average May

    64.2 °F

  • Highest 10 May, 2026

    84.9 °F

Climate (2021–Present)

Corona Airport (9.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    52.3 °F

  • Average 2021–2026

    65.1 °F

  • Average High 2021–2026

    78.3 °F
Get WillyWeather+ to remove ads