Walnut Canyon Reservoir Weather Forecast

    • 66
    • 87

    Mostly Sunny

    • 66
    • 87

    Mostly Sunny

    • 67
    • 92

    Mostly Sunny

    • 68
    • 93

    Mostly Sunny

    • 68
    • 92

    Mostly Sunny

    • 67
    • 92

    Mostly Sunny

Today 21 Jul Orange County Inland

Partly cloudy with patchy fog this morning. Becoming sunny. Highs 82 to 86 towards the coast to 87 farther inland. Areas of Winds south to 10 Mph.

Tonight 21 Jul Orange County Inland

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 63 to 69. Areas of Winds southwest to 10 Mph in the evening becoming light.

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Walnut Canyon Reservoir Temperature Statistics

July Temperature

Corona Airport (9.3 miles)

  • Lowest 3 July, 2026

    53.1 °F

  • Average July

    73.8 °F

  • Highest 15 July, 2026

    98.1 °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

    78.3 °F
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