Lake Riverside Weather Forecast

    • 64
    • 96

    Mostly Sunny

    • 62
    • 95

    Partly Cloudy

    • 60
    • 88

    Slight Chance Thunderstorms

    • 60
    • 87

    Mostly Sunny

    • 59
    • 87

    Mostly Sunny

    • 59
    • 87

    Mostly Sunny

    • 61
    • 89

    Mostly Sunny

Today 15 Jul Riverside County Mountains

Mostly sunny this morning. Becoming partly cloudy. Warmer. Highs 87 to 97. Areas of Winds east to 10 Mph becoming west with Gusts to 25 Mph this afternoon.

Tonight 15 Jul Riverside County Mountains

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

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Lake Riverside Temperature Statistics

July Temperature

Big Bear City Airport (51.6 miles)

  • Lowest 1 July, 2026

    38.5 °F

  • Average July

    65.7 °F

  • Highest 9 July, 2026

    87.6 °F

Climate (2021–2026)

Big Bear City Airport (51.6 miles)

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  • Average Low 2021–2026

    33.7 °F

  • Average 2021–2026

    48.8 °F

  • Average High 2021–2026

    60.3 °F
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