Fountainhead Regional Park Weather Forecast

    • 59
    • 86

    Partly Sunny

    • 59
    • 79

    Partly Sunny

    • 57
    • 77

    Partly Sunny

    • 61
    • 79

    Mostly Cloudy

    • 56
    • 78

    Slight Chance Thunderstorms

    • 56
    • 76

    Partly Sunny

    • 59
    • 78

    Mostly Cloudy

Today 25 Aug Fairfax

Mostly sunny. Highs in the mid 80s. West Winds around 10 Mph.

Tonight 25 Aug Fairfax

Partly cloudy in the Evening, then becoming mostly clear. Lows in the upper 50s. Northwest Winds 5 to 10 Mph.

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Fountainhead Regional Park Temperature Statistics

August Temperature

Fort Belvoir (7.5 miles)

  • Lowest 10 August, 2025

    58.1 °F

  • Average August

    74.3 °F

  • Highest 17 August, 2025

    93.7 °F

Climate (2020–Present)

Fort Belvoir (7.5 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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