Cucamonga-Guasti Regional Park Weather Forecast

    • 47
    • 67

    Mostly Cloudy

    • 46
    • 71

    Sunny

    • 47
    • 71

    Mostly Cloudy

    • 47
    • 67

    Chance Rain

    • 46
    • 58

    Rain

    • 44
    • 59

    Rain

    • 43
    • 59

    Chance Rain

Today 12 Feb San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy. Highs 63 to 68. Light Winds becoming west 10 Mph this afternoon.

Tonight 12 Feb San Bernardino and Riverside County Valleys-The Inland Empire

Mostly cloudy. Lows around 42 in wind Sheltered Areas to 44 to 50 in warmer Locations. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cucamonga-Guasti Regional Park Temperature Statistics

February Temperature

Ontario International Airport (1.2 miles)

  • Lowest 2 February, 2026

    48.7 °F

  • Average February

    65.1 °F

  • Highest 4 February, 2026

    87.7 °F

Climate (2021–Present)

Ontario International Airport (1.2 miles)

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  • Average Low 2021–2026

    55.6 °F

  • Average 2021–2026

    66.7 °F

  • Average High 2021–2026

    79.1 °F
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