Etiwanda Weather Forecast

    • 65
    • 85

    Mostly Sunny

    • 65
    • 91

    Partly Sunny

    • 61
    • 87

    Mostly Sunny

    • 54
    • 82

    Mostly Sunny

    • 52
    • 72

    Mostly Sunny

    • 53
    • 75

    Mostly Sunny

    • 53
    • 76

    Mostly Sunny

Today 26 Feb San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Highs 82 to 88. Light Winds becoming west 10 Mph this afternoon.

Tonight 26 Feb San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows around 56 in wind Sheltered Areas to 58 to 65 in warmer Locations. Areas of Winds east 10 Mph becoming north overnight. Gusts to 25 Mph.

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Etiwanda Temperature Statistics

February Temperature

Ontario International Airport (5.6 miles)

  • Lowest 21 February, 2026

    37.7 °F

  • Average February

    59.8 °F

  • Highest 4 February, 2026

    87.7 °F

Climate (2021–Present)

Ontario International Airport (5.6 miles)

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  • Average Low 2021–2026

    55.6 °F

  • Average 2021–2026

    66.7 °F

  • Average High 2021–2026

    79.1 °F
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