Mount Vernon Weather Forecast

    • 51
    • 69

    Rain Showers

    • 47
    • 62

    Rain Showers

    • 46
    • 66

    Partly Sunny

    • 48
    • 74

    Sunny

    • 52
    • 77

    Partly Sunny

    • 51
    • 76

    Partly Sunny

Today 11 Apr San Bernardino and Riverside County Valleys-The Inland Empire

Mostly cloudy with a slight chance of Showers in the Morning, then partly cloudy in the afternoon. Highs 68 to 73. Areas of Winds southwest to 10 Mph. Becoming 10 to 15 Mph with Gusts to 30 Mph in the afternoon. Chance of measurable precipitation 20 percent.

Tonight 11 Apr San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy. A slight chance of Showers overnight. Lows 45 to 52. Areas of Winds southwest 10 to 15 Mph. Gusts to 30 Mph. Becoming 25 Mph overnight. Chance of measurable precipitation 20 percent.

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Mount Vernon Temperature Statistics

April Temperature

San Bernardino Intl. Airport (4.3 miles)

  • Lowest 4 April, 2026

    48.2 °F

  • Average April

    64.6 °F

  • Highest 5 April, 2026

    89.6 °F

Climate (2021–Present)

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

    80.6 °F
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