South Run Stream Valley Park Weather Forecast

    • 53
    • 78

    Sunny

    • 55
    • 73

    Partly Sunny

    • 59
    • 74

    Rain Showers

    • 63
    • 67

    Rain Showers

    • 60
    • 73

    Partly Sunny

    • 50
    • 73

    Partly Sunny

Today 8 Oct Fairfax

Sunny. Highs in the upper 70s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 8 Oct Fairfax

Clear. Lows in the lower 50s. Northwest Winds 5 to 10 Mph.

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South Run Stream Valley Park Temperature Statistics

October Temperature

Fort Belvoir (3.1 miles)

  • Lowest 5 October, 2026

    53.4 °F

  • Average October

    66.5 °F

  • Highest 2 October, 2026

    87.4 °F

Climate (2021–2026)

Fort Belvoir (3.1 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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