Mount Vernon Weather Forecast

    • 66
    • 99

    Hot

    • 68
    • 102

    Hot

    • 67
    • 103

    Hot

    • 66
    • 99

    Hot

    • 67
    • 97

    Hot

    • 68
    • 96

    Partly Sunny

    • 70
    • 96

    Mostly Sunny

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

Sunny. Highs 92 to 100. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

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

Mostly clear. Lows 59 to 64. Areas of Winds west to 10 Mph with Gusts to 25 Mph this evening becoming light.

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Mount Vernon Temperature Statistics

July Temperature

San Bernardino Intl. Airport (4.3 miles)

  • Lowest 3 July, 2026

    58.1 °F

  • Average July

    71.3 °F

  • Highest 4 July, 2026

    95 °F

Climate (2021–2026)

San Bernardino Intl. Airport (4.3 miles)

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  • Average Low 2021–2026

    54.2 °F

  • Average 2021–2026

    63.2 °F

  • Average High 2021–2026

    80.3 °F
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