Cucamonga-Guasti Regional Park Weather Forecast

    • 49
    • 75

    Increasing Clouds

    • 45
    • 69

    Mostly Cloudy

    • 45
    • 63

    Mostly Cloudy

    • 45
    • 64

    Mostly Sunny

    • 47
    • 70

    Mostly Sunny

    • 47
    • 70

    Mostly Sunny

Today 19 Jan Los Angeles County San Gabriel Valley

Partly cloudy in the morning then mostly cloudy. Highs in the mid 70s.

Tonight 19 Jan Los Angeles County San Gabriel Valley

Cloudy. Lows upper 40s to mid 50s.

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  • Temperature Real-Time

Cucamonga-Guasti Regional Park Temperature Statistics

January Temperature

Ontario, Ontario International Airport (1.2 miles)

  • Lowest 10 January, 2020

    41 °F
  • Average January

    53.9 °F
  • Highest 6 January, 2020

    75.9 °F

Climate (2010–Present)

Ontario, Ontario International Airport (1.2 miles)

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  • Average Low 2010–Present

    56.6 °F
  • Average 2010–Present

    66.9 °F
  • Average High 2010–Present

    79.8 °F
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