Potomac River - Sycamore Point Weather Forecast

    • 75
    • 90

    Smoke

    • 74
    • 93

    Thunderstorms Likely

    • 69
    • 86

    Partly Sunny

    • 72
    • 85

    Slight Chance Thunderstorms

    • 75
    • 88

    Rain Showers Likely

    • 69
    • 86

    Slight Chance Thunderstorms

    • 68
    • 83

    Mostly Sunny

Today 17 Jul Charles

Mostly cloudy. Smoke. Highs around 90. Northwest Winds around 5 Mph.

Tonight 17 Jul Charles

Mostly cloudy. Smoke. A slight chance of Showers and Thunderstorms after midnight. Lows in the lower 70s. Southeast Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Sycamore Point Temperature Statistics

July Temperature

Fort Belvoir (6.2 miles)

  • Lowest 13 July, 2026

    62.4 °F

  • Average July

    81.1 °F

  • Highest 4 July, 2026

    101.3 °F

Climate (2021–2026)

Fort Belvoir (6.2 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    68.3 °F
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