Etiwanda Weather Forecast

    • 64
    • 89

    Sunny

    • 64
    • 90

    Sunny

    • 62
    • 90

    Mostly Sunny

    • 64
    • 89

    Mostly Sunny

    • 66
    • 92

    Partly Sunny

    • 64
    • 92

    Partly Sunny

    • 62
    • 89

    Partly Sunny

Today 23 Mar San Bernardino and Riverside County Valleys-The Inland Empire

Sunny. Highs 86 to 92. Light Winds becoming west 10 to 15 Mph this afternoon.

Tonight 23 Mar San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 52 to 56 in wind Sheltered Areas to 56 to 65 in warmer Locations. Areas of Winds west to 10 Mph with Gusts to 25 Mph this evening becoming light.

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Etiwanda Temperature Statistics

March Temperature

Ontario International Airport (5.6 miles)

  • Lowest 6 March, 2026

    51.1 °F

  • Average March

    71 °F

  • Highest 19 March, 2026

    100.7 °F

Climate (2021–Present)

Ontario International Airport (5.6 miles)

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  • Average Low 2021–2026

    55.8 °F

  • Average 2021–2026

    66.9 °F

  • Average High 2021–2026

    79.3 °F
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