Guasti Weather Forecast

    • 55
    • 80

    Increasing Clouds

    • 54
    • 79

    Mostly Sunny

    • 53
    • 73

    Chance Rain Showers

    • 48
    • 68

    Mostly Sunny

    • 51
    • 74

    Mostly Sunny

    • 53
    • 75

    Mostly Sunny

Today 2 May San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Highs 77 to 83. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 2 May San Bernardino and Riverside County Valleys-The Inland Empire

Clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 48 to 54. Areas of Winds west 10 to 15 Mph with Gusts to 25 Mph in the evening becoming light.

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Guasti Temperature Statistics

May Temperature

Ontario International Airport (0.6 miles)

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  • Average May

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Climate (2019–Present)

Ontario International Airport (0.6 miles)

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  • Average Low 2019–2024

    55.7 °F

  • Average 2019–2024

    66.3 °F

  • Average High 2019–2024

    78.9 °F
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