Potomac River - Chopawamsic Island Weather Forecast

    • 62
    • 87

    Rain Showers

    • 55
    • 73

    Partly Sunny

    • 54
    • 74

    Mostly Sunny

    • 60
    • 75

    Mostly Cloudy

    • 59
    • 75

    Partly Sunny

    • 60
    • 80

    Mostly Sunny

Today 6 Sep Central and Southeast Prince William/Manassas/Manassas Park

Partly sunny. Showers and scattered Thunderstorms this afternoon. Some Thunderstorms may produce gusty Winds this afternoon. Highs in the upper 80s. South Winds around 5 Mph, becoming west this afternoon. Chance of rain 80 percent.

Tonight 6 Sep Central and Southeast Prince William/Manassas/Manassas Park

Cloudy. Numerous Showers and scattered Thunderstorms in the Evening, then scattered Showers after midnight. Patchy fog after midnight. Some Thunderstorms may produce gusty Winds in the evening. Lows around 60. North Winds 5 to 10 Mph. Chance of rain 70 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 1 September, 2025

    55 °F

  • Average September

    69.3 °F

  • Highest 4 September, 2025

    84.9 °F

Climate (2020–Present)

Quantico Marine Corps Airfield - Turner Field (0 miles)

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  • Average Low 2020–2025

    51.4 °F

  • Average 2020–2025

    59.8 °F

  • Average High 2020–2025

    68.6 °F
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