Lake Riverside Weather Forecast

    • 43
    • 72

    Increasing Clouds

    • 41
    • 65

    Partly Sunny

    • 41
    • 61

    Slight Chance Rain

    • 40
    • 63

    Mostly Sunny

    • 44
    • 70

    Sunny

    • 48
    • 76

    Sunny

Today 25 May Riverside County Mountains

Mostly sunny. Highs 69 to 79. Areas of Winds west 10 to 20 Mph. Gusts to 30 Mph this afternoon.

Tonight 25 May Riverside County Mountains

Mostly clear in the evening. Becoming partly cloudy. Lows 40 to 50. Areas of Winds west 10 to 20 Mph with Gusts to 35 Mph.

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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 °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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