Lake Riverside Weather Forecast

    • 39
    • 55

    Rain Showers Likely

    • 40
    • 60

    Mostly Sunny

    • 47
    • 69

    Sunny

    • 52
    • 75

    Sunny

    • 54
    • 75

    Breezy

    • 50
    • 73

    Breezy

Today 12 Oct Riverside County Mountains

Mostly cloudy with Showers likely this Morning, then partly cloudy with a chance of Showers this afternoon. Areas of fog this Morning, then patchy fog this afternoon. Highs 51 to 61. Areas of Winds west 15 to 25 Mph. Gusts to 40 Mph. Becoming 45 Mph this afternoon. Chance of measurable precipitation 70 percent.

Tonight 12 Oct Riverside County Mountains

Partly cloudy. A chance of Showers in the evening. Patchy fog in the evening. Colder. Lows 28 to 38. Areas of Winds northwest 15 to 25 Mph. Gusts to 45 Mph. Becoming 35 Mph overnight. Chance of measurable precipitation 40 percent.

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Lake Riverside Temperature Statistics

October Temperature

Big Bear City Airport (51.6 miles)

  • Lowest 1 October, 2026

    37.4 °F

  • Average October

    60.5 °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

    33.8 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    60.4 °F
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