Mount Vernon Weather Forecast

    • 64
    • 95

    Sunny

    • 64
    • 92

    Mostly Sunny

    • 63
    • 94

    Mostly Sunny

    • 63
    • 95

    Mostly Sunny

    • 60
    • 89

    Mostly Sunny

    • 59
    • 86

    Mostly Sunny

Today 13 Jun San Bernardino and Riverside County Valleys-The Inland Empire

Sunny. Highs 90 to 98. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 13 Jun San Bernardino and Riverside County Valleys-The Inland Empire

Clear. Lows 59 to 63. Areas of Winds west 10 to 15 Mph with Gusts to 25 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 3 June, 2026

    56.5 °F

  • Average June

    69.2 °F

  • Highest 10 June, 2026

    96.8 °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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