South Run Park Weather Forecast

    • 37
    • 52

    Increasing Clouds

    • 47
    • 60

    Mostly Cloudy

    • 56
    • 74

    Mostly Cloudy

    • 32
    • 64

    Chance Rain

    • 32
    • 50

    Mostly Sunny

    • 40
    • 58

    Partly Sunny

Today 24 Mar Fairfax

Sunny. Highs in the lower 50s. North Winds 5 to 10 Mph, becoming west in the afternoon.

Tonight 24 Mar Fairfax

Mostly clear. Much cooler with Lows in the lower 30s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Run Park Temperature Statistics

March Temperature

Fort Belvoir (5 miles)

  • Lowest 13 March, 2026

    25.3 °F

  • Average March

    51.5 °F

  • Highest 11 March, 2026

    86.5 °F

Climate (2021–Present)

Fort Belvoir (5 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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