Potomac River - Fort Washington Light Weather Forecast

    • 66
    • 86

    Decreasing Clouds

    • 67
    • 80

    Mostly Cloudy

    • 68
    • 84

    Rain Showers Likely

    • 64
    • 79

    Rain Showers Likely

    • 57
    • 66

    Rain Showers Likely

    • 57
    • 63

    Chance Rain Showers

Today 18 Sep Prince Georges

Partly sunny. Highs in the mid 80s. North Winds 5 to 10 Mph.

Tonight 18 Sep Prince Georges

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

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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

    75.8 °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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