Fairfax Weather Forecast

    • 43
    • 58

    Mostly Cloudy

    • 60
    • 69

    Rain Showers

    • 46
    • 72

    Rain Showers

    • 39
    • 57

    Mostly Sunny

    • 49
    • 66

    Partly Sunny

    • 52
    • 75

    Mostly Cloudy

Today 14 Mar Arlington/Falls Church/Alexandria

Cloudy in the Morning, then becoming partly sunny. Highs in the upper 50s. East Winds 5 to 10 Mph.

Tonight 14 Mar Arlington/Falls Church/Alexandria

Mostly cloudy. Patchy drizzle after midnight. Patchy fog after midnight. Lows in the mid 40s. Southeast Winds 5 to 10 Mph.

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Fairfax Temperature Statistics

March Temperature

Washington/Dulles International Airport, DC (9.3 miles)

  • Lowest 3 March, 2025

    20.8 °F

  • Average March

    45.5 °F

  • Highest 11 March, 2025

    73 °F

Climate (2020–Present)

Washington/Dulles International Airport, DC (9.3 miles)

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  • Average Low 2020–2025

    47.7 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    68.2 °F
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