Lake Riverside Weather Forecast

    • 43
    • 69

    Decreasing Clouds

    • 43
    • 68

    Partly Sunny

    • 44
    • 73

    Mostly Sunny

    • 47
    • 79

    Mostly Sunny

    • 49
    • 82

    Sunny

    • 49
    • 83

    Mostly Sunny

Today 16 May Riverside County Mountains

Mostly sunny. Highs 65 to 75. Areas of Winds west 20 to 30 Mph. Gusts to 40 Mph. Becoming 45 Mph this afternoon.

Tonight 16 May Riverside County Mountains

Partly cloudy. Lows 39 to 49. Areas of Winds west 20 to 30 Mph with Gusts to 45 Mph becoming northwest 10 to 20 Mph with Gusts to 40 Mph overnight.

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  • Temperature Forecast NOAA

  • 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

    53.5 °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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