Etiwanda Weather Forecast

    • 53
    • 72

    Partly Sunny

    • 63
    • 84

    Mostly Sunny

    • 66
    • 92

    Mostly Sunny

    • 66
    • 95

    Partly Sunny

    • 64
    • 92

    Mostly Sunny

    • 67
    • 96

    Mostly Sunny

Today 10 Mar San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 68 to 74. Light Winds becoming west 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 10 Mar San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 43 to 46 in wind Sheltered Areas to 46 to 53 in warmer Locations. Areas of Winds west 10 to 15 Mph in the 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

    66.1 °F

  • Highest 8 March, 2026

    84 °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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