Lake Riverside Weather Forecast

    • 57
    • 86

    Increasing Clouds

    • 51
    • 77

    Rain Showers

    • 43
    • 64

    Rain Showers

    • 39
    • 55

    Rain Showers

    • 40
    • 61

    Mostly Sunny

    • 45
    • 70

    Sunny

Today 9 Oct Riverside County Mountains

Sunny. Highs 67 to 77.

Tonight 9 Oct Riverside County Mountains

Clear this evening. Becoming partly cloudy. Cooler. Lows 50 to 60. Areas of Winds west 10 to 15 Mph with Gusts to 25 Mph.

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  • Temperature Forecast NOAA

  • 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

    61.4 °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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