Mason Neck Weather Forecast

    • 65
    • 69

    Rain Showers

    • 64
    • 78

    Rain Showers

    • 68
    • 82

    Chance Rain Showers

    • 67
    • 87

    Chance Thunderstorms

    • 65
    • 86

    Chance Rain Showers

    • 62
    • 85

    Slight Chance Thunderstorms

Today 13 May Fairfax

Showers with a chance of Thunderstorms. Some Thunderstorms may produce heavy rainfall. Highs in the upper 60s. Southeast Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain near 100 percent.

Tonight 13 May Fairfax

A chance of Thunderstorms. Showers. Patchy fog. Some Thunderstorms may produce heavy rainfall. Lows in the lower 60s. East Winds 10 to 15 Mph with Gusts up to 35 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mason Neck Temperature Statistics

May Temperature

Fort Belvoir (3.7 miles)

  • Lowest 10 May, 2025

    41.9 °F

  • Average May

    67.2 °F

  • Highest 2 May, 2025

    85.1 °F

Climate (2020–Present)

Fort Belvoir (3.7 miles)

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  • Average Low 2020–2025

    48 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    68.4 °F
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