Potomac River - Fort Washington Light Weather Forecast

    • 70
    • 83

    Rain Showers

    • 70
    • 87

    Chance Rain Showers

    • 57
    • 81

    Partly Sunny

    • 59
    • 81

    Mostly Sunny

    • 63
    • 85

    Mostly Sunny

    • 65
    • 87

    Chance Rain Showers

Today 12 Sep Prince Georges

Mostly cloudy with isolated Showers and Thunderstorms. Highs in the lower 80s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 12 Sep Prince Georges

Scattered Showers and Thunderstorms in the Evening, then Showers with isolated Thunderstorms after midnight. Patchy fog after midnight. Lows in the upper 60s. Southeast Winds 5 to 10 Mph. Chance of rain 90 percent.

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Potomac River - Fort Washington Light Temperature Statistics

September Temperature

Fort Belvoir (7.5 miles)

  • Lowest 8 September, 2026

    58.8 °F

  • Average September

    77 °F

  • Highest 1 September, 2026

    96.4 °F

Climate (2021–2026)

Fort Belvoir (7.5 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    68.4 °F
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