Cucamonga-Guasti Regional Park Weather Forecast

    • 54
    • 84

    Sunny

    • 52
    • 75

    Increasing Clouds

    • 52
    • 72

    Partly Sunny

    • 58
    • 85

    Mostly Sunny

    • 60
    • 95

    Sunny

    • 60
    • 95

    Sunny

    • 59
    • 88

    Sunny

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

Mostly sunny. Areas of blowing dust. Warmer. Highs 79 to 86. Areas of Winds east 20 to 30 Mph with Gusts to 45 Mph.

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

Mostly clear this evening. Becoming partly cloudy. Lows 45 to 48 in wind Sheltered Areas to 48 to 57 in warmer Locations. Areas of Winds east 15 to 25 Mph with Gusts to 40 Mph this evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cucamonga-Guasti Regional Park Temperature Statistics

March Temperature

Ontario International Airport (1.2 miles)

  • Lowest 3 March, 2026

    51.1 °F

  • Average March

    63.1 °F

  • Highest 1 March, 2026

    82.9 °F

Climate (2021–Present)

Ontario International Airport (1.2 miles)

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  • Average Low 2021–2026

    55.7 °F

  • Average 2021–2026

    66.8 °F

  • Average High 2021–2026

    79.1 °F
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