Cucamonga-Guasti Regional Park Weather Forecast

    • 59
    • 84

    Sunny

    • 61
    • 89

    Sunny

    • 60
    • 89

    Partly Sunny

    • 59
    • 84

    Mostly Cloudy

    • 57
    • 78

    Partly Sunny

    • 57
    • 77

    Chance Rain Showers

Today 8 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Highs 83 to 88. Areas of Winds north to 10 Mph becoming west with Gusts to 25 Mph in the afternoon.

Tonight 8 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Clear. Lows 53 to 57 in wind Sheltered Areas to 56 to 61 in warmer Locations. Areas of Winds west 10 to 15 Mph with Gusts to 25 Mph becoming north with Gusts to 30 Mph overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cucamonga-Guasti Regional Park Temperature Statistics

November Temperature

Ontario International Airport (1.2 miles)

  • Lowest 2 November, 2025

    53.1 °F

  • Average November

    64.9 °F

  • Highest 1 November, 2025

    84.9 °F

Climate (2020–Present)

Ontario International Airport (1.2 miles)

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  • Average Low 2020–2025

    55.4 °F

  • Average 2020–2025

    66.5 °F

  • Average High 2020–2025

    78.9 °F
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