Lake Riverside Weather Forecast

    • 49
    • 80

    Mostly Sunny

    • 56
    • 86

    Sunny

    • 61
    • 91

    Mostly Sunny

    • 57
    • 91

    Mostly Sunny

    • 53
    • 86

    Mostly Sunny

    • 50
    • 84

    Sunny

    • 48
    • 80

    Sunny

Today 21 Jun Riverside County Mountains

Sunny. Highs 78 to 88. Areas of Winds west 10 to 15 Mph. Gusts to 25 Mph. Becoming 30 Mph this afternoon.

Tonight 21 Jun Riverside County Mountains

Mostly clear. Lows 48 to 58. Areas of Winds northwest 10 to 15 Mph. Gusts to 25 Mph this evening.

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Lake Riverside Temperature Statistics

June Temperature

Big Bear City Airport (51.6 miles)

  • Lowest 8 June, 2026

    33.6 °F

  • Average June

    63.5 °F

  • Highest 11 June, 2026

    81.9 °F

Climate (2021–2026)

Big Bear City Airport (51.6 miles)

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  • Average Low 2021–2026

    33.9 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    60.3 °F
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