Potomac River - Hallowing Point Weather Forecast

    • 38
    • 56

    Mostly Sunny

    • 49
    • 66

    Rain Showers

    • 47
    • 66

    Partly Sunny

    • 50
    • 72

    Chance Rain

    • 34
    • 60

    Mostly Sunny

    • 38
    • 49

    Mostly Cloudy

    • 41
    • 54

    Mostly Cloudy

Today 19 Mar Charles

Mostly sunny. Highs in the mid 50s. South Winds around 5 Mph.

Tonight 19 Mar Charles

Mostly clear. Lows in the upper 30s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Hallowing Point Temperature Statistics

March Temperature

Fort Belvoir (6.2 miles)

  • Lowest 13 March, 2026

    25.3 °F

  • Average March

    52.1 °F

  • Highest 11 March, 2026

    86.5 °F

Climate (2021–Present)

Fort Belvoir (6.2 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    68.2 °F
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