Mason Neck National Wildlife Refuge Weather Forecast

    • 64
    • 80

    Increasing Clouds

    • 62
    • 70

    Rain Showers Likely

    • 64
    • 69

    Rain Showers Likely

    • 64
    • 78

    Mostly Sunny

    • 64
    • 85

    Mostly Sunny

    • 62
    • 80

    Slight Chance Thunderstorms

Today 15 Sep Charles

Partly sunny. Highs around 80. Northeast Winds 5 to 10 Mph.

Tonight 15 Sep Charles

Partly cloudy. Lows around 60. Northeast Winds around 5 Mph.

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  • Temperature Real-Time

Mason Neck National Wildlife Refuge Temperature Statistics

September Temperature

Fort Belvoir (5.6 miles)

  • Lowest 9 September, 2025

    49.8 °F

  • Average September

    67.5 °F

  • Highest 6 September, 2025

    92.7 °F

Climate (2020–Present)

Fort Belvoir (5.6 miles)

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  • Average Low 2020–2025

    47.8 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    68.3 °F
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