Occoquan Reservoir Weather Forecast

    • 59
    • 72

    Rain Showers Likely

    • 62
    • 69

    Rain Showers Likely

    • 60
    • 81

    Partly Sunny

    • 60
    • 85

    Mostly Sunny

    • 59
    • 79

    Partly Sunny

    • 59
    • 77

    Mostly Cloudy

    • 62
    • 79

    Partly Sunny

Today 16 Sep Central and Southeast Prince William/Manassas/Manassas Park

Showers likely with a slight chance of Thunderstorms. Highs in the lower 70s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 60 percent.

Tonight 16 Sep Central and Southeast Prince William/Manassas/Manassas Park

Showers likely with a slight chance of Thunderstorms in the Evening, then Showers with a slight chance of Thunderstorms after midnight. Lows in the upper 50s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 80 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Occoquan Reservoir Temperature Statistics

September Temperature

Fort Belvoir (8.1 miles)

  • Lowest 9 September, 2025

    49.8 °F

  • Average September

    67.8 °F

  • Highest 6 September, 2025

    92.7 °F

Climate (2020–Present)

Fort Belvoir (8.1 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    47.8 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    68.3 °F
Get WillyWeather+ to remove ads