Occoquan Reservoir Weather Forecast

    • 56
    • 59

    Rain Showers

    • 52
    • 68

    Rain Showers Likely

    • 48
    • 68

    Mostly Sunny

    • 49
    • 68

    Mostly Sunny

    • 53
    • 71

    Chance Rain Showers

    • 58
    • 72

    Rain Showers Likely

    • 59
    • 71

    Chance Rain Showers

Today 21 May Central and Southeast Prince William/Manassas/Manassas Park

Cloudy with scattered Showers with possible Thunderstorms and drizzle. Patchy fog. Highs in the upper 50s. East Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 21 May Central and Southeast Prince William/Manassas/Manassas Park

Showers with a slight chance of Thunderstorms early this Evening, then a chance of Showers after midnight. Patchy fog. Lows in the mid 50s. East Winds 5 to 10 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Occoquan Reservoir Temperature Statistics

May Temperature

Fort Belvoir (8.1 miles)

  • Lowest 10 May, 2025

    41.9 °F

  • Average May

    68.7 °F

  • Highest 16 May, 2025

    89.2 °F

Climate (2020–Present)

Fort Belvoir (8.1 miles)

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  • Average Low 2020–2025

    48 °F

  • Average 2020–2025

    58.2 °F

  • Average High 2020–2025

    68.4 °F
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