Mason Neck State Park Weather Forecast

    • 72
    • 86

    Rain Showers Likely

    • 72
    • 89

    Chance Rain Showers

    • 75
    • 88

    Rain Showers Likely

    • 73
    • 91

    Chance Rain Showers

    • 70
    • 87

    Mostly Sunny

    • 74
    • 89

    Mostly Sunny

Today 14 Aug Fairfax

Mostly cloudy. A slight chance of Showers late this Morning, then a chance of Showers and Thunderstorms this afternoon. Highs in the mid 80s. Northeast Winds around 5 Mph. Chance of rain 50 percent.

Tonight 14 Aug Fairfax

Mostly cloudy. A chance of Showers and Thunderstorms in the evening. Lows around 70. North Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mason Neck State Park Temperature Statistics

August Temperature

Fort Belvoir (4.3 miles)

  • Lowest 1 August, 2026

    65.5 °F

  • Average August

    79.8 °F

  • Highest 8 August, 2026

    92.8 °F

Climate (2021–2026)

Fort Belvoir (4.3 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    68.3 °F
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