Franconia Weather Forecast

    • 19
    • 31

    Decreasing Clouds

    • 28
    • 37

    Mostly Sunny

    • 31
    • 50

    Mostly Cloudy

    • 41
    • 55

    Mostly Cloudy

    • 27
    • 49

    Partly Sunny

    • 37
    • 44

    Mostly Cloudy

    • 33
    • 52

    Mostly Cloudy

Today 15 Dec Arlington/Falls Church/Alexandria

Partly sunny. Highs around 30. West Winds around 5 Mph.

Tonight 15 Dec Arlington/Falls Church/Alexandria

Partly cloudy in the Evening, then clearing. Lows around 19. Southwest Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Franconia Temperature Statistics

December Temperature

Fort Belvoir (4.3 miles)

  • Lowest 9 December, 2025

    17.4 °F

  • Average December

    34.8 °F

  • Highest 4 December, 2025

    47.5 °F

Climate (2020–Present)

Fort Belvoir (4.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    47.8 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    68.2 °F
Get WillyWeather+ to remove ads