Lake Riverside Weather Forecast

    • 66
    • 96

    Slight Chance Thunderstorms

    • 67
    • 98

    Hot

    • 68
    • 99

    Hot

    • 68
    • 99

    Hot

    • 67
    • 98

    Hot

    • 65
    • 96

    Sunny

Today 24 Aug Riverside County Mountains

Mostly sunny this Morning, then partly cloudy with a slight chance of Showers and Thunderstorms this afternoon. Highs 86 to 96. Areas of Winds southeast 10 to 15 Mph becoming west with Gusts to 30 Mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight 24 Aug Riverside County Mountains

Mostly clear. Lows 61 to 71. Areas of Winds west 10 Mph in the evening becoming light.

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  • Temperature Real-Time

Lake Riverside Temperature Statistics

August Temperature

Big Bear City Airport (51.6 miles)

  • Lowest 15 August, 2026

    45.9 °F

  • Average August

    69.6 °F

  • Highest 1 August, 2026

    88 °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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