Santiago Peak Weather Forecast

    • 45
    • 54

    Rain Showers

    • 45
    • 51

    Rain Showers

    • 45
    • 50

    Chance Rain Showers

    • 44
    • 51

    Rain Showers Likely

    • 43
    • 49

    Chance Rain Showers

    • 44
    • 49

    Chance Rain Showers

Today 31 Dec Santa Ana Mountains and Foothills

Cloudy. A chance of Showers this Morning, then Showers likely this afternoon. Highs 62 to 67. Areas of Winds east 10 Mph. Chance of measurable precipitation 70 percent.

Tonight 31 Dec Santa Ana Mountains and Foothills

Showers in the Evening, then Showers and a slight chance of Thunderstorms overnight. Locally heavy rainfall possible overnight. Cooler. Lows 47 to 56. Areas of Winds southeast 10 to 15 Mph. Gusts to 25 Mph. Becoming 30 Mph overnight.

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Santiago Peak Temperature Statistics

December Temperature

Corona Airport (13 miles)

  • Lowest 6 December, 2025

    37 °F

  • Average December

    59.8 °F

  • Highest 10 December, 2025

    90 °F

Climate (2020–Present)

Corona Airport (13 miles)

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  • Average Low 2020–2025

    52.1 °F

  • Average 2020–2025

    64.8 °F

  • Average High 2020–2025

    78 °F
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