Rancho Cucamonga Central Park Weather Forecast

    • 55
    • 80

    Increasing Clouds

    • 55
    • 80

    Increasing Clouds

    • 54
    • 77

    Mostly Cloudy

    • 53
    • 72

    Partly Sunny

    • 52
    • 68

    Partly Sunny

    • 52
    • 70

    Mostly Sunny

    • 55
    • 75

    Mostly Sunny

Today 23 May San Bernardino and Riverside County Valleys-The Inland Empire

Mostly cloudy this morning. Becoming sunny. Highs 78 to 85. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 23 May San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy this evening. Becoming mostly cloudy. Patchy fog overnight. Lows 50 to 55. Areas of Winds west 10 to 15 Mph with Gusts to 25 Mph this evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rancho Cucamonga Central Park Temperature Statistics

May Temperature

Ontario International Airport (5 miles)

  • Lowest 6 May, 2026

    49.6 °F

  • Average May

    68.9 °F

  • Highest 11 May, 2026

    96.7 °F

Climate (2021–Present)

Ontario International Airport (5 miles)

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  • Average Low 2021–2026

    55.8 °F

  • Average 2021–2026

    67.1 °F

  • Average High 2021–2026

    79.4 °F
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