Occoquan Regional Park Weather Forecast

    • 72
    • 90

    Chance Rain Showers

    • 66
    • 86

    Partly Sunny

    • 65
    • 81

    Partly Sunny

    • 67
    • 86

    Chance Rain Showers

    • 65
    • 81

    Chance Rain Showers

    • 63
    • 77

    Chance Rain Showers

Today 17 Sep Fairfax

Mostly sunny. Scattered Showers and Thunderstorms this afternoon. Highs in the upper 80s. South Winds around 5 Mph. Chance of rain 50 percent.

Tonight 17 Sep Fairfax

Mostly cloudy with scattered Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Lows in the lower 70s. West Winds around 5 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Occoquan Regional Park Temperature Statistics

September Temperature

Fort Belvoir (4.3 miles)

  • Lowest 8 September, 2026

    58.8 °F

  • Average September

    76.5 °F

  • Highest 1 September, 2026

    96.4 °F

Climate (2021–2026)

Fort Belvoir (4.3 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    68.4 °F
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