Summit Heights Weather Forecast

    • 56
    • 83

    Decreasing Clouds

    • 57
    • 85

    Mostly Sunny

    • 58
    • 87

    Mostly Sunny

    • 56
    • 85

    Mostly Sunny

    • 57
    • 83

    Mostly Sunny

    • 61
    • 87

    Mostly Sunny

Today 22 Jul San Bernardino and Riverside County Valleys-The Inland Empire

Patchy fog this morning. Partly cloudy with patchy drizzle this Morning, then sunny this afternoon. Highs 80 to 87. Light Winds becoming west 10 to 15 Mph this afternoon.

Tonight 22 Jul San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 52 to 58. Areas of Winds west 10 to 15 Mph in the evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Summit Heights Temperature Statistics

July Temperature

Ontario International Airport (8.7 miles)

  • Lowest 2 July, 2025

    58.6 °F

  • Average July

    77 °F

  • Highest 10 July, 2025

    98.7 °F

Climate (2020–Present)

Ontario International Airport (8.7 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    55.5 °F

  • Average 2020–2025

    66.7 °F

  • Average High 2020–2025

    79.2 °F
Get WillyWeather+ to remove ads