Mount Vernon Weather Forecast

    • 72
    • 102

    Hot

    • 69
    • 95

    Mostly Sunny

    • 71
    • 95

    Mostly Sunny

    • 67
    • 95

    Mostly Sunny

    • 67
    • 94

    Mostly Sunny

    • 68
    • 96

    Mostly Sunny

    • 69
    • 98

    Hot

Today 16 Jul San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Highs 95 to 103. Areas of Winds southwest to 10 Mph. Becoming 10 to 15 Mph with Gusts to 30 Mph this afternoon.

Tonight 16 Jul San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear this evening. Becoming partly cloudy. Lows 63 to 68. Areas of Winds west 10 to 15 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

    75 °F

  • Highest 8 July, 2026

    102.2 °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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