Walnut Canyon Reservoir Weather Forecast

    • 52
    • 78

    Mostly Sunny

    • 50
    • 77

    Mostly Sunny

    • 51
    • 72

    Mostly Cloudy

    • 50
    • 71

    Partly Sunny

    • 50
    • 68

    Partly Sunny

    • 51
    • 69

    Partly Sunny

Today 19 Jan Orange County Inland

Partly cloudy in the morning. Becoming mostly sunny. Highs around 74 towards the coast to 75 to 78 farther inland. Light Winds.

Tonight 19 Jan Orange County Inland

Mostly clear. Lows 50 to 54. Areas of Winds southwest 10 to 20 Mph becoming east 10 to 15 Mph overnight. Gusts to 35 Mph.

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  • Temperature Real-Time

Walnut Canyon Reservoir Temperature Statistics

January Temperature

Corona Airport (9.3 miles)

  • Lowest 8 January, 2026

    37.9 °F

  • Average January

    60.6 °F

  • Highest 14 January, 2026

    82.9 °F

Climate (2021–Present)

Corona Airport (9.3 miles)

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  • Average Low 2021–2026

    52.1 °F

  • Average 2021–2026

    64.8 °F

  • Average High 2021–2026

    78 °F
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