Fontana Gateway Weather Forecast

    • 56
    • 76

    Increasing Clouds

    • 53
    • 76

    Gradual Clearing

    • 53
    • 73

    Patchy Fog

    • 52
    • 69

    Partly Sunny

    • 55
    • 76

    Patchy Fog

    • 55
    • 78

    Patchy Fog

    • 54
    • 74

    Patchy Fog

Today 17 May San Bernardino and Riverside County Valleys-The Inland Empire

Mostly cloudy with patchy fog in the morning. Becoming sunny. Warmer. Highs 75 to 82. Light Winds becoming west 10 to 15 Mph in the afternoon.

Tonight 17 May San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy this evening. Becoming mostly cloudy. Patchy fog overnight. Lows 49 to 55. Areas of Winds west to 10 Mph this evening becoming light.

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Fontana Gateway Temperature Statistics

May Temperature

Ontario International Airport (3.1 miles)

  • Lowest 6 May, 2024

    49.6 °F
  • Average May

    65 °F
  • Highest 9 May, 2024

    82.7 °F

Climate (2019–Present)

Ontario International Airport (3.1 miles)

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  • Average Low 2019–2024

    55.6 °F
  • Average 2019–2024

    66.3 °F
  • Average High 2019–2024

    78.9 °F
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