Etiwanda Weather Forecast

    • 52
    • 63

    Rain Showers

    • 49
    • 61

    Rain Showers Likely

    • 47
    • 60

    Chance Rain Showers

    • 46
    • 60

    Chance Rain Showers

    • 43
    • 60

    Slight Chance Rain Showers

    • 42
    • 60

    Mostly Sunny

Today 3 Jan San Bernardino and Riverside County Valleys-The Inland Empire

Cloudy with a slight chance of Showers this Morning, then mostly cloudy with a chance of Showers this afternoon. Highs 61 to 66. Areas of Winds south to 10 Mph. Chance of measurable precipitation 50 percent.

Tonight 3 Jan San Bernardino and Riverside County Valleys-The Inland Empire

Mostly cloudy with Showers likely. Lows 49 to 54. Areas of Winds south 10 Mph. Chance of measurable precipitation 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Etiwanda Temperature Statistics

January Temperature

Ontario International Airport (5.6 miles)

  • Lowest 1 January, 2026

    52 °F

  • Average January

    57.3 °F

  • Highest 1 January, 2026

    63 °F

Climate (2021–Present)

Ontario International Airport (5.6 miles)

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  • Average Low 2021–2026

    55.6 °F

  • Average 2021–2026

    66.6 °F

  • Average High 2021–2026

    79 °F
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