Occoquan Reservoir Weather Forecast

    • 75
    • 91

    Thunderstorms Likely

    • 76
    • 95

    Chance Thunderstorms

    • 72
    • 90

    Chance Thunderstorms

    • 72
    • 87

    Rain Showers Likely

    • 71
    • 88

    Rain Showers Likely

    • 69
    • 86

    Chance Thunderstorms

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

Partly sunny. A chance of Showers and Thunderstorms this afternoon. Highs in the lower 90s. South Winds 5 to 10 Mph. Chance of rain 40 percent.

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

Mostly cloudy. Showers and Thunderstorms likely in the evening. Lows in the mid 70s. Southwest Winds 5 to 10 Mph. Chance of rain 60 percent.

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Occoquan Reservoir Temperature Statistics

July Temperature

Fort Belvoir (8.1 miles)

  • Lowest 5 July, 2025

    61.7 °F

  • Average July

    80 °F

  • Highest 8 July, 2025

    96.3 °F

Climate (2020–Present)

Fort Belvoir (8.1 miles)

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  • Average Low 2020–2025

    48 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    68.4 °F
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