Fontana Gateway Weather Forecast
- 47
- 67
Partly Sunny
- 49
- 70
Mostly Sunny
- 52
- 73
Mostly Sunny
- 50
- 76
Mostly Cloudy
- 50
- 66
Rain Likely
- 47
- 59
Chance Rain
Today 31 Jan San Bernardino and Riverside County Valleys-The Inland Empire
Mostly sunny this morning. Becoming partly cloudy. Patchy frost in Colder. Wind Sheltered Locations this morning. Warmer. Highs 66 to 69. Light Winds becoming west to 10 Mph this afternoon.
Tonight 31 Jan San Bernardino and Riverside County Valleys-The Inland Empire
Partly cloudy in the evening. Becoming mostly clear. Lows 39 to 44 in wind Sheltered Areas to 43 to 50 in warmer Locations. Areas of Winds west to 10 Mph in the evening becoming light.
Fontana Gateway Temperature Statistics
January Temperature
Ontario International Airport (3.1 miles)
Lowest 11 January, 2025
39.7 °FAverage January
57.1 °FHighest 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 MoreAverage Low 2020–2025
55.6 °FAverage 2020–2025
66.6 °FAverage High 2020–2025
79.1 °F