Cucamonga-Guasti Regional Park Weather Forecast
- 57
- 79
Patchy Fog
- 57
- 77
Partly Sunny
- 59
- 80
Partly Sunny
- 63
- 86
Mostly Sunny
- 63
- 89
Mostly Sunny
- 63
- 88
Mostly Sunny
- 62
- 86
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.
Cucamonga-Guasti Regional Park Temperature Statistics
June Temperature
Ontario International Airport (1.2 miles)
Lowest
–Average June
–Highest
–
Climate (2019–Present)
Ontario International Airport (1.2 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