Fountainhead Regional Park Weather Forecast

    • 35
    • 45

    Increasing Clouds

    • 39
    • 54

    Mostly Cloudy

    • 36
    • 54

    Mostly Cloudy

    • 46
    • 53

    Chance Rain

    • 43
    • 66

    Chance Rain

    • 41
    • 58

    Chance Rain

Today 22 Dec Fairfax

Sunny. Highs in the mid 40s. Southwest Winds around 5 Mph.

Tonight 22 Dec Fairfax

Mostly cloudy. Rain likely with a chance of snow after midnight. Lows in the mid 30s. South Winds 5 to 10 Mph. Chance of precipitation 70 percent.

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Fountainhead Regional Park Temperature Statistics

December Temperature

Fort Belvoir (7.5 miles)

  • Lowest 16 December, 2025

    17.1 °F

  • Average December

    35.1 °F

  • Highest 19 December, 2025

    60.3 °F

Climate (2020–Present)

Fort Belvoir (7.5 miles)

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  • Average Low 2020–2025

    47.7 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    68.2 °F
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