Sierra Lakes Weather Forecast

    • 62
    • 85

    Becoming Sunny

    • 69
    • 93

    Mostly Sunny

    • 72
    • 95

    Mostly Sunny

    • 73
    • 99

    Hot

    • 73
    • 100

    Hot

    • 75
    • 102

    Hot

Today 14 Mar San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy in the morning. Becoming mostly sunny. Highs 82 to 88. Light Winds becoming southwest 10 to 15 Mph with Gusts to 30 Mph in the afternoon.

Tonight 14 Mar San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 46 to 50 in wind Sheltered Areas to 50 to 60 in warmer Locations. Areas of Winds west 10 to 15 Mph with Gusts to 25 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sierra Lakes Temperature Statistics

March Temperature

Ontario International Airport (9.3 miles)

  • Lowest 6 March, 2026

    51.1 °F

  • Average March

    65.1 °F

  • Highest 8 March, 2026

    84 °F

Climate (2021–Present)

Ontario International Airport (9.3 miles)

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  • Average Low 2021–2026

    55.7 °F

  • Average 2021–2026

    66.8 °F

  • Average High 2021–2026

    79.2 °F
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