Fontana Weather Forecast
- 57
- 80
Patchy Fog
- 57
- 77
Partly Sunny
- 60
- 81
Partly Sunny
- 63
- 87
Mostly Sunny
- 64
- 90
Mostly Sunny
- 63
- 89
Mostly Sunny
- 63
- 87
Mostly Sunny
Today 1 Jun San Bernardino and Riverside County Valleys-The Inland Empire
Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 80 to 88. Light Winds becoming west 10 to 15 Mph this afternoon.
Tonight 1 Jun San Bernardino and Riverside County Valleys-The Inland Empire
Mostly clear this evening. Becoming mostly cloudy. Patchy fog overnight. Lows 49 to 57. Areas of Winds west 10 to 15 Mph this evening becoming light.
Fontana Temperature Statistics
June Temperature
Ontario International Airport (8.1 miles)
Lowest
–Average June
–Highest
–
Climate (2019–Present)
Ontario International Airport (8.1 miles)
Take a look at our website widgetsAvailable free! Find Out MoreAverage Low 2019–2024
55.6 °FAverage 2019–2024
66.3 °FAverage High 2019–2024
78.9 °F