Potomac River - Hallowing Point Weather Forecast

    • 65
    • 78

    Chance Rain Showers

    • 63
    • 69

    Rain Showers Likely

    • 66
    • 68

    Rain Showers Likely

    • 64
    • 77

    Mostly Sunny

    • 66
    • 84

    Mostly Sunny

    • 64
    • 77

    Partly Sunny

Today 15 Sep Charles

Partly sunny. Highs in the upper 70s. Northeast Winds 10 to 15 Mph.

Tonight 15 Sep Charles

Mostly cloudy. A slight chance of Showers after midnight. Lows in the lower 60s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

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  • Temperature Real-Time

Potomac River - Hallowing Point Temperature Statistics

September Temperature

Fort Belvoir (6.2 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 (6.2 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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