Potomac River - Belle Haven Marina Weather Forecast

    • 36
    • 58

    Mostly Sunny

    • 50
    • 58

    Chance Rain Showers

    • 39
    • 66

    Rain

    • 29
    • 45

    Mostly Sunny

    • 31
    • 47

    Mostly Sunny

    • 30
    • 49

    Mostly Sunny

    • 30
    • 49

    Mostly Sunny

Today 8 Dec Fairfax

Sunny. Highs in the upper 50s. Southeast Winds around 5 Mph.

Tonight 8 Dec Fairfax

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 30s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Belle Haven Marina Temperature Statistics

December Temperature

Washington/Reagan National Airport, DC (5 miles)

  • Lowest 1 December, 2023

    37.7 °F

  • Average December

    47.5 °F

  • Highest 3 December, 2023

    55.9 °F

Climate (2018–Present)

Washington/Reagan National Airport, DC (5 miles)

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  • Average Low 2018–2023

    52.8 °F

  • Average 2018–2023

    60.4 °F

  • Average High 2018–2023

    68.9 °F
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