Ontario International Airport Weather Forecast

    • 50
    • 75

    Partly Sunny

    • 52
    • 74

    Mostly Sunny

    • 51
    • 74

    Partly Sunny

    • 51
    • 72

    Partly Sunny

    • 48
    • 65

    Slight Chance Rain

    • 45
    • 62

    Mostly Cloudy

Today 19 Mar San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy. Highs 71 to 76. Areas of Winds east to 10 Mph. Becoming west 10 to 20 Mph with Gusts to 30 Mph in the afternoon.

Tonight 19 Mar San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy in the evening. Becoming mostly clear. Lows 44 to 50. Areas of Winds south 10 to 15 Mph with Gusts to 25 Mph in the evening becoming light.

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Ontario International Airport Temperature Statistics

March Temperature

Ontario International Airport (1.2 miles)

  • Lowest 8 March, 2024

    43.6 °F
  • Average March

    56.3 °F
  • Highest 9 March, 2024

    71.7 °F

Climate (2019–Present)

Ontario International Airport (1.2 miles)

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  • Average Low 2019–2024

    55.9 °F
  • Average 2019–2024

    66.4 °F
  • Average High 2019–2024

    79 °F
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