Middle Run Stream Valley Park Weather Forecast

    • 47
    • 66

    Slight Chance Rain Showers

    • 41
    • 59

    Mostly Sunny

    • 41
    • 61

    Partly Sunny

    • 41
    • 61

    Partly Sunny

    • 45
    • 63

    Mostly Sunny

    • 40
    • 62

    Mostly Sunny

    • 45
    • 62

    Partly Sunny

Today 30 Oct Fairfax

Mostly sunny with a 20 percent chance of Showers. Highs in the mid 60s. Southwest Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 30 Oct Fairfax

Partly cloudy with a slight chance of Showers in the Evening, then mostly clear after midnight. Lows in the upper 40s. West Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

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Middle Run Stream Valley Park Temperature Statistics

October Temperature

Fort Belvoir (3.7 miles)

  • Lowest 24 October, 2025

    34.3 °F

  • Average October

    58.1 °F

  • Highest 6 October, 2025

    83.1 °F

Climate (2020–Present)

Fort Belvoir (3.7 miles)

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  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    68.3 °F
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