Lake Riverside Weather Forecast

    • 64
    • 89

    Breezy

    • 64
    • 89

    Sunny

    • 63
    • 90

    Mostly Sunny

    • 63
    • 90

    Sunny

    • 63
    • 92

    Sunny

    • 63
    • 92

    Sunny

Today 3 Oct Riverside County Mountains

Sunny. Highs 77 to 87. Areas of Winds east 15 to 25 Mph with Gusts to 40 Mph.

Tonight 3 Oct Riverside County Mountains

Mostly clear. Lows 54 to 64. Areas of Winds east 10 to 20 Mph with Gusts to 30 Mph.

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  • Temperature Real-Time

Lake Riverside Temperature Statistics

October Temperature

Big Bear City Airport (51.6 miles)

  • Lowest 1 October, 2026

    37.4 °F

  • Average October

    61.1 °F

  • Highest 1 October, 2026

    75.6 °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

    48.8 °F

  • Average High 2021–2026

    60.4 °F
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