Etiwanda Weather Forecast

    • 67
    • 92

    Decreasing Clouds

    • 67
    • 93

    Mostly Sunny

    • 69
    • 96

    Mostly Sunny

    • 71
    • 101

    Hot

    • 70
    • 99

    Hot

    • 70
    • 100

    Hot

Today 20 Jul San Bernardino and Riverside County Valleys-The Inland Empire

Patchy fog this morning. Partly cloudy. Highs 90 to 96. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 20 Jul San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 63 to 68. Areas of Winds west 10 to 15 Mph in the evening becoming light.

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Etiwanda Temperature Statistics

July Temperature

Ontario International Airport (5.6 miles)

  • Lowest 3 July, 2026

    59.6 °F

  • Average July

    79.7 °F

  • Highest 15 July, 2026

    102.7 °F

Climate (2021–2026)

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

    79.3 °F
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