Lorton Weather Forecast

    • 59
    • 74

    Decreasing Clouds

    • 62
    • 82

    Partly Sunny

    • 64
    • 86

    Mostly Sunny

    • 64
    • 88

    Mostly Cloudy

    • 61
    • 74

    Rain Showers Likely

    • 56
    • 69

    Rain Showers Likely

Today 29 Sep Fairfax

Mostly cloudy. Highs in the lower 70s. Northwest Winds around 5 Mph.

Tonight 29 Sep Fairfax

Partly cloudy in the Evening, then clearing. Patchy fog after midnight. Lows in the upper 50s. Light and variable Winds.

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Lorton Temperature Statistics

September Temperature

Fort Belvoir (2.5 miles)

  • Lowest 25 September, 2026

    52 °F

  • Average September

    72.4 °F

  • Highest 1 September, 2026

    96.4 °F

Climate (2021–2026)

Fort Belvoir (2.5 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    68.3 °F
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