Fairfax Weather Forecast

    • 56
    • 72

    Becoming Sunny

    • 52
    • 75

    Rain Showers

    • 45
    • 65

    Mostly Sunny

    • 47
    • 70

    Slight Chance Rain Showers

    • 42
    • 61

    Mostly Sunny

    • 43
    • 62

    Partly Sunny

Today 18 Oct Arlington/Falls Church/Alexandria

Mostly sunny. Highs in the lower 70s. South Winds around 5 Mph.

Tonight 18 Oct Arlington/Falls Church/Alexandria

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 50s. South Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Fairfax Temperature Statistics

October Temperature

Washington/Dulles International Airport, DC (9.3 miles)

  • Lowest 10 October, 2025

    39.9 °F

  • Average October

    61.5 °F

  • Highest 6 October, 2025

    82.9 °F

Climate (2020–Present)

Washington/Dulles International Airport, DC (9.3 miles)

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

  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    68.6 °F
Get WillyWeather+ to remove ads