Rancho Fontana Weather Forecast

    • 57
    • 82

    Sunny

    • 56
    • 80

    Partly Sunny

    • 54
    • 68

    Chance Rain Showers

    • 48
    • 63

    Chance Rain Showers

    • 50
    • 66

    Partly Sunny

    • 49
    • 70

    Partly Sunny

    • 49
    • 68

    Partly Sunny

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

Sunny. Highs 78 to 84. Areas of Winds east to 10 Mph becoming west this afternoon.

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

Clear. Lows 46 to 50 in wind Sheltered Areas to 50 to 57 in warmer Locations. Areas of Winds east 10 Mph this evening becoming light.

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Rancho Fontana Temperature Statistics

February Temperature

Ontario International Airport (7.5 miles)

  • Lowest 2 February, 2026

    48.7 °F

  • Average February

    66.6 °F

  • Highest 4 February, 2026

    87.1 °F

Climate (2021–Present)

Ontario International Airport (7.5 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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