Fountainhead Regional Park Weather Forecast

    • 47
    • 72

    Chance Rain Showers

    • 41
    • 64

    Mostly Sunny

    • 39
    • 63

    Mostly Sunny

    • 41
    • 62

    Partly Sunny

    • 44
    • 61

    Mostly Cloudy

    • 47
    • 63

    Chance Rain Showers

Today 21 Oct Fairfax

Sunny. Highs in the lower 70s. South Winds 5 to 10 Mph. Gusts up to 25 Mph in the afternoon.

Tonight 21 Oct Fairfax

Mostly cloudy in the Evening, then clearing. A 40 percent chance of Showers. Lows in the upper 40s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fountainhead Regional Park Temperature Statistics

October Temperature

Fort Belvoir (7.5 miles)

  • Lowest 17 October, 2025

    39.4 °F

  • Average October

    60.7 °F

  • Highest 6 October, 2025

    83.1 °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

    68.4 °F
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