Mason Neck State Park Weather Forecast

    • 71
    • 91

    Becoming Sunny

    • 76
    • 98

    Slight Chance Thunderstorms

    • 78
    • 103

    Hot

    • 78
    • 104

    Slight Chance Thunderstorms

    • 76
    • 102

    Chance Thunderstorms

    • 75
    • 98

    Chance Thunderstorms

Today 30 Jun Fairfax

Sunny. Highs around 90. South Winds 5 to 10 Mph.

Tonight 30 Jun Fairfax

Mostly clear. Lows in the upper 60s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Real-Time

Mason Neck State Park Temperature Statistics

June Temperature

Fort Belvoir (4.3 miles)

  • Lowest 3 June, 2026

    49.5 °F

  • Average June

    75.2 °F

  • Highest 12 June, 2026

    98.2 °F

Climate (2021–2026)

Fort Belvoir (4.3 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    68.3 °F
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