Mount Vernon Weather Forecast

    • 29
    • 53

    Increasing Clouds

    • 14
    • 43

    Mostly Cloudy

    • 15
    • 21

    Wintry Mix

    • 16
    • 23

    Wintry Mix Likely

    • 7
    • 26

    Mostly Sunny

    • 8
    • 26

    Partly Sunny

Today 22 Jan Charles

Sunny. Highs in the lower 50s. Southwest Winds 5 to 10 Mph, becoming west with Gusts up to 20 Mph in the afternoon.

Tonight 22 Jan Charles

Partly cloudy. Lows in the upper 20s. North Winds around 5 Mph.

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Mount Vernon Temperature Statistics

January Temperature

Fort Belvoir (3.7 miles)

  • Lowest 19 January, 2026

    18.1 °F

  • Average January

    38.2 °F

  • Highest 7 January, 2026

    64 °F

Climate (2021–Present)

Fort Belvoir (3.7 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    68.2 °F
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