Mount Vernon Weather Forecast

    • 48
    • 75

    Becoming Sunny

    • 46
    • 69

    Breezy

    • 46
    • 68

    Breezy

    • 46
    • 69

    Partly Sunny

    • 45
    • 63

    Chance Rain Showers

    • 45
    • 64

    Mostly Sunny

Today 29 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy this morning. Becoming mostly sunny. Highs 71 to 76. Light Winds becoming west to 10 Mph this afternoon.

Tonight 29 Nov San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Patchy fog overnight. Lows 41 to 45 in wind Sheltered Areas to 44 to 49 in warmer Locations. Light Winds.

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Mount Vernon Temperature Statistics

November Temperature

San Bernardino Intl. Airport (4.3 miles)

  • Lowest 19 November, 2025

    42.8 °F

  • Average November

    59.3 °F

  • Highest 10 November, 2025

    93.2 °F

Climate (2020–Present)

San Bernardino Intl. Airport (4.3 miles)

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  • Average Low 2020–2025

    54 °F

  • Average 2020–2025

    63 °F

  • Average High 2020–2025

    80.2 °F
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