Lake Riverside Weather Forecast

    • 46
    • 76

    Sunny

    • 48
    • 78

    Sunny

    • 48
    • 79

    Mostly Sunny

    • 48
    • 78

    Sunny

    • 47
    • 80

    Mostly Sunny

    • 48
    • 81

    Sunny

Today 19 May Riverside County Mountains

Sunny, warmer. Highs 67 to 77. Areas of Winds northeast 10 to 15 Mph. Gusts to 30 Mph. Becoming 25 Mph this afternoon.

Tonight 19 May Riverside County Mountains

Clear. Lows 44 to 54. Areas of Winds north 10 Mph.

Graph Plots Open in Graphs

  • 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

    54 °F

  • Highest 10 May, 2026

    77.9 °F

Climate (2021–Present)

Big Bear City Airport (51.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    34 °F

  • Average 2021–2026

    49 °F

  • Average High 2021–2026

    60.3 °F
Get WillyWeather+ to remove ads