Mount Vernon Weather Forecast

    • 73
    • 102

    Hot

    • 72
    • 101

    Hot

    • 72
    • 100

    Hot

    • 67
    • 96

    Mostly Sunny

    • 62
    • 87

    Partly Sunny

    • 55
    • 79

    Chance Rain Showers

    • 52
    • 72

    Chance Rain Showers

Today 6 Oct San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy in the morning. Becoming mostly sunny. A slight chance of Showers. Highs 71 to 77.

Tonight 6 Oct San Bernardino and Riverside County Valleys-The Inland Empire

Clear. Lows 67 to 72. Areas of Winds east to 10 Mph.

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Mount Vernon Temperature Statistics

October Temperature

San Bernardino Intl. Airport (4.3 miles)

  • Lowest 1 October, 2026

    60.8 °F

  • Average October

    79.9 °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

    54.2 °F

  • Average 2021–2026

    63.3 °F

  • Average High 2021–2026

    80.4 °F
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