Mount Vernon Weather Forecast

    • 63
    • 95

    Sunny

    • 63
    • 93

    Sunny

    • 63
    • 94

    Mostly Sunny

    • 62
    • 92

    Sunny

    • 61
    • 90

    Sunny

    • 61
    • 90

    Sunny

Today 10 Jun San Bernardino and Riverside County Valleys-The Inland Empire

Sunny, warmer. Highs 89 to 97. Areas of Winds west to 10 Mph becoming southwest with Gusts to 25 Mph this afternoon.

Tonight 10 Jun San Bernardino and Riverside County Valleys-The Inland Empire

Clear. Lows 54 to 61. Areas of Winds west 10 to 15 Mph with Gusts to 25 Mph in the evening becoming light.

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Mount Vernon Temperature Statistics

June Temperature

San Bernardino Intl. Airport (4.3 miles)

  • Lowest 3 June, 2026

    56.5 °F

  • Average June

    67.8 °F

  • Highest 4 June, 2026

    93.2 °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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