Potomac River - Fort Washington Light Weather Forecast

    • 58
    • 64

    Rain Showers

    • 56
    • 64

    Chance Rain Showers

    • 54
    • 65

    Slight Chance Rain Showers

    • 55
    • 68

    Partly Sunny

    • 56
    • 70

    Partly Sunny

    • 56
    • 71

    Partly Sunny

Today 22 Sep Prince Georges

Rain with possible Thunderstorms and drizzle. Patchy fog. Highs in the lower 60s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 90 percent.

Tonight 22 Sep Prince Georges

Patchy drizzle. Rain, mainly in the evening. Patchy fog. Lows in the upper 50s. Northeast Winds 10 to 15 Mph with Gusts up to 25 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 15 September, 2026

    53.8 °F

  • Average September

    75.6 °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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