Mason Neck Weather Forecast

    • 54
    • 84

    Chance Thunderstorms

    • 44
    • 68

    Chance Rain Showers

    • 52
    • 72

    Mostly Sunny

    • 54
    • 74

    Rain Showers

    • 52
    • 70

    Mostly Sunny

    • 56
    • 75

    Partly Sunny

Today 10 May Fairfax

Mostly sunny. A chance of Showers and Thunderstorms this afternoon. Highs in the lower 80s. West Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 10 May Fairfax

Mostly cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a chance of Showers after midnight. Lows in the lower 50s. North Winds 5 to 10 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mason Neck Temperature Statistics

May Temperature

Fort Belvoir (3.7 miles)

  • Lowest 1 May, 2026

    37.4 °F

  • Average May

    59.2 °F

  • Highest 5 May, 2026

    85.3 °F

Climate (2021–Present)

Fort Belvoir (3.7 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    68.3 °F
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