Mount Vernon Weather Forecast

    • 54
    • 60

    Increasing Clouds

    • 30
    • 74

    Rain Showers

    • 25
    • 41

    Partly Sunny

    • 31
    • 43

    Mostly Cloudy

    • 37
    • 55

    Partly Sunny

    • 42
    • 61

    Partly Sunny

Today 15 Mar Charles

Mostly sunny in the Morning, then becoming mostly cloudy. Highs around 60. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 15 Mar Charles

A slight chance of Thunderstorms. Showers, mainly in the evening. Lows in the lower 50s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 90 percent.

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Mount Vernon Temperature Statistics

March Temperature

Fort Belvoir (3.7 miles)

  • Lowest 12 March, 2026

    30.2 °F

  • Average March

    52.5 °F

  • Highest 11 March, 2026

    86.5 °F

Climate (2021–Present)

Fort Belvoir (3.7 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    68.2 °F
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