Etiwanda Weather Forecast

    • 53
    • 76

    Breezy

    • 58
    • 83

    Partly Sunny

    • 53
    • 82

    Partly Sunny

    • 52
    • 78

    Mostly Sunny

    • 52
    • 72

    Partly Sunny

    • 51
    • 71

    Partly Sunny

Today 17 Apr San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Highs 74 to 80. Areas of Winds north 20 to 30 Mph with Gusts to 45 Mph.

Tonight 17 Apr San Bernardino and Riverside County Valleys-The Inland Empire

Clear. Lows 47 to 53. Areas of Winds west 10 to 15 Mph with Gusts to 25 Mph becoming southeast overnight.

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Etiwanda Temperature Statistics

April Temperature

Ontario International Airport (5.6 miles)

  • Lowest 13 April, 2026

    50 °F

  • Average April

    67.4 °F

  • Highest 4 April, 2026

    89.7 °F

Climate (2021–Present)

Ontario International Airport (5.6 miles)

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  • Average Low 2021–2026

    55.8 °F

  • Average 2021–2026

    67 °F

  • Average High 2021–2026

    79.4 °F
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