Lake Riverside Weather Forecast

    • 57
    • 89

    Sunny

    • 53
    • 86

    Sunny

    • 57
    • 85

    Mostly Sunny

    • 56
    • 85

    Mostly Sunny

    • 58
    • 86

    Mostly Sunny

    • 60
    • 88

    Mostly Sunny

Today 30 Aug Riverside County Mountains

Mostly sunny. Highs 82 to 92. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 30 Aug Riverside County Mountains

Clear, cooler. Lows 52 to 62. Areas of Winds west 10 to 20 Mph. Gusts to 25 Mph in the evening.

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Lake Riverside Temperature Statistics

August Temperature

Big Bear City Airport (51.6 miles)

  • Lowest 15 August, 2026

    45.9 °F

  • Average August

    69.8 °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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