Etiwanda Weather Forecast

    • 61
    • 84

    Mostly Sunny

    • 61
    • 91

    Mostly Sunny

    • 62
    • 91

    Mostly Sunny

    • 63
    • 92

    Mostly Sunny

    • 63
    • 91

    Sunny

    • 62
    • 90

    Sunny

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

Mostly sunny. Highs 83 to 88. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

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

Mostly clear. Lows 57 to 62. Areas of Winds west 10 to 15 Mph with Gusts to 25 Mph this evening becoming light.

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Etiwanda Temperature Statistics

June Temperature

Ontario International Airport (5.6 miles)

  • Lowest 1 June, 2026

    58.6 °F

  • Average June

    72.5 °F

  • Highest 3 June, 2026

    88.6 °F

Climate (2021–Present)

Ontario International Airport (5.6 miles)

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  • Average Low 2021–2026

    55.8 °F

  • Average 2021–2026

    67.1 °F

  • Average High 2021–2026

    79.4 °F
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