Fairfax Weather Forecast

    • 54
    • 78

    Becoming Sunny

    • 57
    • 79

    Mostly Sunny

    • 58
    • 79

    Partly Sunny

    • 61
    • 79

    Mostly Cloudy

    • 63
    • 82

    Chance Rain Showers

    • 57
    • 78

    Chance Rain Showers

Today 31 Aug Arlington/Falls Church/Alexandria

Partly sunny. Highs in the upper 70s. Northeast Winds around 5 Mph.

Tonight 31 Aug Arlington/Falls Church/Alexandria

Partly cloudy in the Evening, then becoming mostly clear. Lows in the mid 50s. Northeast Winds 5 to 10 Mph, becoming north after midnight.

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Fairfax Temperature Statistics

August Temperature

Washington/Dulles International Airport, DC (9.3 miles)

  • Lowest 10 August, 2025

    54.6 °F

  • Average August

    74.3 °F

  • Highest 17 August, 2025

    95.6 °F

Climate (2020–Present)

Washington/Dulles International Airport, DC (9.3 miles)

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  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    68.5 °F
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