Mount Vernon Weather Forecast

    • 65
    • 90

    Mostly Sunny

    • 61
    • 85

    Mostly Sunny

    • 61
    • 84

    Sunny

    • 57
    • 82

    Mostly Sunny

    • 55
    • 71

    Chance Rain Showers

    • 53
    • 66

    Rain Showers Likely

Today 16 Oct San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Highs 83 to 91. Areas of Winds east 35 to 45 Mph with Gusts to 65 Mph.

Tonight 16 Oct San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 63 to 68. Areas of Winds east 25 to 35 Mph. Gusts to 55 Mph. Becoming 50 Mph overnight.

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Mount Vernon Temperature Statistics

October Temperature

San Bernardino Intl. Airport (4.3 miles)

  • Lowest 13 October, 2026

    50 °F

  • Average October

    75.1 °F

  • Highest 2 October, 2026

    104 °F

Climate (2021–2026)

San Bernardino Intl. Airport (4.3 miles)

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  • Average Low 2021–2026

    54.3 °F

  • Average 2021–2026

    63.3 °F

  • Average High 2021–2026

    80.4 °F
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