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.
Fontana Gateway Temperature Statistics
June Temperature
Ontario International Airport (3.1 miles)
Lowest 1 June, 2023
57 °FAverage June
62.6 °FHighest 2 June, 2023
75.9 °F
Climate (2010–Present)
Ontario International Airport (3.1 miles)
Average Low 2010–Present
55.1 °FAverage 2010–Present
65.5 °FAverage High 2010–Present
78.3 °F