Walnut Canyon Reservoir Weather Forecast

    • 70
    • 98

    Hot

    • 74
    • 101

    Hot

    • 74
    • 104

    Hot

    • 72
    • 104

    Hot

    • 68
    • 95

    Mostly Sunny

    • 65
    • 90

    Mostly Sunny

Today 25 Aug Orange County Inland

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 90 to 94 towards the coast to 100 farther inland. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 25 Aug Orange County Inland

Mostly clear. Lows 68 to 72. Areas of Winds southwest to 10 Mph in the evening becoming light.

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Walnut Canyon Reservoir Temperature Statistics

August Temperature

Corona Airport (9.3 miles)

  • Lowest 15 August, 2026

    59 °F

  • Average August

    77.9 °F

  • Highest 23 August, 2026

    102.9 °F

Climate (2021–2026)

Corona Airport (9.3 miles)

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  • Average Low 2021–2026

    52.3 °F

  • Average 2021–2026

    65.1 °F

  • Average High 2021–2026

    78.4 °F
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