Mount Vernon Weather Forecast

    • 58
    • 84

    Becoming Sunny

    • 60
    • 85

    Partly Sunny

    • 61
    • 86

    Mostly Sunny

    • 62
    • 92

    Sunny

    • 63
    • 93

    Sunny

    • 63
    • 93

    Mostly Sunny

Today 7 Jun San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 79 to 85. Areas of Winds west to 10 Mph becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 7 Jun San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear in the evening. Becoming partly cloudy. Lows 51 to 57. Areas of Winds southwest 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

    68.5 °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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