Downtown Fontana Weather Forecast
- 50
- 68
Gradual Clearing
- 51
- 66
Mostly Cloudy
- 53
- 62
Mostly Cloudy
- 51
- 67
Partly Sunny
- 53
- 73
Mostly Sunny
- 56
- 78
Mostly Sunny
Today 23 Apr San Bernardino and Riverside County Valleys-The Inland Empire
Mostly cloudy with patchy fog and drizzle in the Morning, then mostly sunny in the afternoon. Highs 70 to 75. Areas of Winds southwest 10 to 15 Mph. Gusts to 25 Mph in the afternoon.
Tonight 23 Apr San Bernardino and Riverside County Valleys-The Inland Empire
Partly cloudy. Patchy fog overnight. Lows 44 to 50. Areas of Winds west 10 to 15 Mph. Gusts to 25 Mph in the evening.
Downtown Fontana Temperature Statistics
April Temperature
Ontario International Airport (8.7 miles)
Lowest 6 April, 2024
41.6 °FAverage April
60.6 °FHighest 11 April, 2024
88.6 °F
Climate (2019–Present)
Ontario International Airport (8.7 miles)
Take a look at our website widgetsAvailable free! Find Out MoreAverage Low 2019–2024
55.7 °FAverage 2019–2024
66.3 °FAverage High 2019–2024
78.9 °F