Mount Vernon Weather Forecast

    • 62
    • 94

    Sunny

    • 61
    • 93

    Mostly Sunny

    • 59
    • 86

    Partly Sunny

    • 57
    • 83

    Mostly Sunny

    • 58
    • 85

    Mostly Sunny

    • 59
    • 86

    Mostly Sunny

Today 4 Jun San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Highs 88 to 96. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 4 Jun San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 56 to 61. Areas of Winds west 10 to 15 Mph in the evening becoming light.

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  • Temperature Real-Time

Mount Vernon Temperature Statistics

June Temperature

San Bernardino Intl. Airport (4.3 miles)

  • Lowest 1 June, 2026

    59.9 °F

  • Average June

    69.3 °F

  • Highest 1 June, 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

    80.5 °F
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