Potomac River - Chopawamsic Island Weather Forecast

    • 71
    • 92

    Rain Showers Likely

    • 69
    • 82

    Mostly Cloudy

    • 71
    • 84

    Rain Showers Likely

    • 69
    • 87

    Slight Chance Thunderstorms

    • 62
    • 83

    Mostly Sunny

    • 65
    • 81

    Mostly Sunny

    • 66
    • 86

    Chance Rain Showers

Today 10 Sep Central and Southeast Prince William/Manassas/Manassas Park

Partly sunny with a slight chance of Showers and Thunderstorms. Hot with Highs around 90. West Winds around 5 Mph. Chance of rain 20 percent.

Tonight 10 Sep Central and Southeast Prince William/Manassas/Manassas Park

Mostly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then a chance of Showers and Thunderstorms after midnight. Patchy fog after midnight. Lows in the upper 60s. Northwest Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Chopawamsic Island Temperature Statistics

September Temperature

Quantico Marine Corps Airfield - Turner Field (0 miles)

  • Lowest 8 September, 2026

    61 °F

  • Average September

    78.1 °F

  • Highest 1 September, 2026

    98.1 °F

Climate (2021–2026)

Quantico Marine Corps Airfield - Turner Field (0 miles)

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  • Average Low 2021–2026

    51.1 °F

  • Average 2021–2026

    59.7 °F

  • Average High 2021–2026

    68.6 °F
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