Fontana Gateway Weather Forecast

    • 41
    • 58

    Patchy Fog

    • 41
    • 65

    Becoming Sunny

    • 41
    • 65

    Mostly Sunny

    • 44
    • 67

    Mostly Sunny

    • 42
    • 66

    Partly Sunny

    • 46
    • 70

    Mostly Sunny

    • 45
    • 71

    Mostly Sunny

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

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 56 to 60. Light Winds becoming west 10 Mph this afternoon.

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

Partly cloudy. Patchy fog overnight. Lows 30 to 36 in wind Sheltered Areas to 30 to 40 in warmer Locations. Areas of Winds south to 10 Mph this evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Fontana Gateway Temperature Statistics

January Temperature

Ontario International Airport (3.1 miles)

  • Lowest 11 January, 2025

    39.9 °F

  • Average January

    59 °F

  • Highest 2 January, 2025

    85.6 °F

Climate (2020–Present)

Ontario International Airport (3.1 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    55.6 °F

  • Average 2020–2025

    66.6 °F

  • Average High 2020–2025

    79.2 °F
Get WillyWeather+ to remove ads