Fontana Gateway Weather Forecast

    • 58
    • 80

    Patchy Fog

    • 54
    • 70

    Slight Chance Rain Showers

    • 56
    • 70

    Mostly Cloudy

    • 56
    • 72

    Patchy Fog

    • 56
    • 76

    Partly Sunny

    • 57
    • 75

    Mostly Cloudy

    • 58
    • 74

    Partly Sunny

Today 4 Jun San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy this morning. Becoming mostly sunny. Patchy fog this morning. Highs 79 to 87. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fontana Gateway Temperature Statistics

June Temperature

Ontario International Airport (3.1 miles)

  • Lowest 1 June, 2023

    57 °F

  • Average June

    62.6 °F

  • Highest 2 June, 2023

    75.9 °F

Climate (2010–Present)

Ontario International Airport (3.1 miles)

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  • Average Low 2010–Present

    55.1 °F

  • Average 2010–Present

    65.5 °F

  • Average High 2010–Present

    78.3 °F
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