Etiwanda Weather Forecast

    • 62
    • 85

    Sunny

    • 60
    • 83

    Mostly Sunny

    • 59
    • 79

    Partly Sunny

    • 57
    • 74

    Rain Showers Likely

    • 53
    • 67

    Rain Showers Likely

    • 53
    • 68

    Mostly Sunny

Today 18 Oct San Bernardino and Riverside County Valleys-The Inland Empire

Sunny. Highs 82 to 88. Areas of Winds east to 10 Mph.

Tonight 18 Oct San Bernardino and Riverside County Valleys-The Inland Empire

Clear. Lows 56 to 61. Areas of Winds east to 10 Mph in the evening becoming light.

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Etiwanda Temperature Statistics

October Temperature

Ontario International Airport (5.6 miles)

  • Lowest 14 October, 2026

    52.6 °F

  • Average October

    79.6 °F

  • Highest 5 October, 2026

    104.6 °F

Climate (2021–2026)

Ontario International Airport (5.6 miles)

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  • Average Low 2021–2026

    55.9 °F

  • Average 2021–2026

    67.3 °F

  • Average High 2021–2026

    79.4 °F
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