Mount Vernon Weather Forecast

    • 66
    • 98

    Hot

    • 68
    • 98

    Hot

    • 68
    • 97

    Hot

    • 69
    • 96

    Chance Rain Showers

    • 71
    • 100

    Hot

    • 73
    • 104

    Hot

    • 70
    • 101

    Slight Chance Rain Showers

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

Mostly sunny. Highs 91 to 99. Areas of Winds southwest to 10 Mph becoming west with Gusts to 25 Mph this afternoon.

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

Partly cloudy. Patchy dense fog overnight. Lows 59 to 64. Areas of Winds west to 10 Mph this evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Vernon Temperature Statistics

July Temperature

San Bernardino Intl. Airport (4.3 miles)

  • Lowest 3 July, 2026

    58.1 °F

  • Average July

    73.4 °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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