Lake Riverside Weather Forecast

    • 50
    • 73

    Rain Showers

    • 44
    • 58

    Rain Showers

    • 44
    • 61

    Mostly Sunny

    • 47
    • 68

    Sunny

    • 49
    • 71

    Partly Sunny

    • 49
    • 72

    Mostly Sunny

    • 49
    • 72

    Partly Sunny

Today 21 Oct Riverside County Mountains

Partly cloudy. Highs 60 to 70.

Tonight 21 Oct Riverside County Mountains

Partly cloudy with a chance of Showers this Evening, then cloudy with Showers overnight. Colder. Lows 40 to 50. Snow level above 8000 feet. Areas of Winds southwest 10 to 20 Mph. Gusts to 30 Mph. Becoming 35 Mph overnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Riverside Temperature Statistics

October Temperature

Big Bear City Airport (51.6 miles)

  • Lowest 13 October, 2026

    27.5 °F

  • Average October

    54.2 °F

  • Highest 2 October, 2026

    75.7 °F

Climate (2021–2026)

Big Bear City Airport (51.6 miles)

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

  • Average Low 2021–2026

    33.9 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    60.4 °F
Get WillyWeather+ to remove ads