Lake Riverside Weather Forecast

    • 43
    • 61

    Chance Rain Showers

    • 49
    • 64

    Rain

    • 43
    • 58

    Rain Showers

    • 44
    • 65

    Mostly Sunny

    • 44
    • 68

    Mostly Sunny

    • 43
    • 66

    Partly Sunny

    • 43
    • 64

    Partly Sunny

Today 30 Oct Riverside County Mountains

Partly cloudy. A slight chance of Showers in the afternoon. Highs 52 to 62. Snow level above 8000 feet.

Tonight 30 Oct Riverside County Mountains

Partly cloudy. A slight chance of Showers this evening. Colder. Lows 34 to 44. Snow level above 8000 feet this evening. Areas of Winds west 10 to 15 Mph with Gusts to 30 Mph becoming to 10 Mph overnight. Chance of measurable precipitation 20 percent.

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Lake Riverside Temperature Statistics

October Temperature

Big Bear City Airport (51.6 miles)

  • Lowest 28 October, 2026

    25.9 °F

  • Average October

    50.8 °F

  • Highest 2 October, 2026

    75.7 °F

Climate (2021–2026)

Big Bear City Airport (51.6 miles)

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  • Average Low 2021–2026

    33.9 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    60.4 °F
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