Etiwanda Weather Forecast

    • 54
    • 75

    Mostly Sunny

    • 55
    • 72

    Partly Sunny

    • 61
    • 85

    Sunny

    • 63
    • 93

    Sunny

    • 62
    • 94

    Mostly Sunny

    • 61
    • 88

    Mostly Sunny

Today 9 Mar San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Highs 72 to 77. Light Winds becoming southwest 10 to 15 Mph with Gusts to 30 Mph in the afternoon.

Tonight 9 Mar San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy. Lows 43 to 47 in wind Sheltered Areas to 46 to 54 in warmer Locations. Areas of Winds southwest 10 to 15 Mph with Gusts to 30 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Etiwanda Temperature Statistics

March Temperature

Ontario International Airport (5.6 miles)

  • Lowest 3 March, 2026

    51.1 °F

  • Average March

    63.1 °F

  • Highest 1 March, 2026

    82.9 °F

Climate (2021–Present)

Ontario International Airport (5.6 miles)

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  • Average Low 2021–2026

    55.7 °F

  • Average 2021–2026

    66.8 °F

  • Average High 2021–2026

    79.1 °F
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