Potomac River - Hallowing Point Weather Forecast

    • 70
    • 78

    Chance Rain Showers

    • 70
    • 75

    Chance Rain Showers

    • 70
    • 80

    Chance Rain Showers

    • 69
    • 81

    Chance Rain Showers

    • 69
    • 82

    Slight Chance Thunderstorms

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    • 82

    Chance Rain Showers

Today 18 Aug Charles

Mostly cloudy. A slight chance of Showers in the afternoon. Highs around 80. North Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 18 Aug Charles

Mostly cloudy with a 30 percent chance of Showers. Lows in the upper 60s. Northeast Winds 5 to 10 Mph.

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Potomac River - Hallowing Point Temperature Statistics

August Temperature

Fort Belvoir (6.2 miles)

  • Lowest 10 August, 2025

    58.1 °F

  • Average August

    74.2 °F

  • Highest 14 August, 2025

    92.5 °F

Climate (2020–Present)

Fort Belvoir (6.2 miles)

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  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    68.3 °F
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