Potomac River - Fort Washington Light Weather Forecast

    • 66
    • 83

    Chance Rain Showers

    • 61
    • 82

    Partly Sunny

    • 62
    • 83

    Mostly Sunny

    • 65
    • 85

    Partly Sunny

    • 72
    • 88

    Partly Sunny

    • 68
    • 91

    Slight Chance Thunderstorms

Today 5 Sep Prince Georges

Mostly cloudy. A slight chance of Showers and Thunderstorms in the afternoon. Highs in the lower 80s. North Winds around 5 Mph. Chance of rain 20 percent.

Tonight 5 Sep Prince Georges

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the mid 60s. Northeast Winds around 5 Mph.

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  • Temperature Real-Time

Potomac River - Fort Washington Light Temperature Statistics

September Temperature

Fort Belvoir (7.5 miles)

  • Lowest 2 September, 2026

    72.1 °F

  • Average September

    80.9 °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

    58.1 °F

  • Average High 2021–2026

    68.3 °F
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