Lake Riverside Weather Forecast

    • 47
    • 78

    Mostly Sunny

    • 47
    • 79

    Mostly Sunny

    • 46
    • 78

    Mostly Sunny

    • 44
    • 73

    Mostly Sunny

    • 43
    • 68

    Partly Sunny

    • 42
    • 65

    Partly Sunny

Today 22 May Riverside County Mountains

Mostly sunny. Highs 72 to 82. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 22 May Riverside County Mountains

Mostly clear. Lows 46 to 56. Areas of Winds west 10 to 15 Mph becoming northwest overnight.

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  • Temperature Real-Time

Lake Riverside Temperature Statistics

May Temperature

Big Bear City Airport (51.6 miles)

  • Lowest 6 May, 2026

    27.7 °F

  • Average May

    52.8 °F

  • Highest 10 May, 2026

    77.9 °F

Climate (2021–Present)

Big Bear City Airport (51.6 miles)

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  • Average Low 2021–2026

    33.9 °F

  • Average 2021–2026

    49 °F

  • Average High 2021–2026

    60.3 °F
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