Lake Riverside Weather Forecast

    • 36
    • 56

    Mostly Sunny

    • 41
    • 69

    Mostly Sunny

    • 42
    • 70

    Slight Chance Rain Showers

    • 43
    • 66

    Mostly Sunny

    • 46
    • 74

    Mostly Sunny

    • 46
    • 78

    Partly Sunny

Today 27 Apr Riverside County Mountains

Partly cloudy in the morning. Becoming mostly sunny. Not as cool. Highs 51 to 61. Areas of Winds west 10 to 20 Mph with Gusts to 30 Mph.

Tonight 27 Apr Riverside County Mountains

Mostly clear. Lows 34 to 44. Areas of Winds west 10 to 20 Mph with Gusts to 30 Mph becoming north to 10 Mph overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Riverside Temperature Statistics

April Temperature

Big Bear City Airport (51.6 miles)

  • Lowest 18 April, 2026

    21.2 °F

  • Average April

    42.8 °F

  • Highest 7 April, 2026

    64.4 °F

Climate (2021–Present)

Big Bear City Airport (51.6 miles)

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  • Average Low 2021–2026

    34 °F

  • Average 2021–2026

    49.1 °F

  • Average High 2021–2026

    60.3 °F
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