Chantilly Weather Forecast

    • 25
    • 44

    Snow

    • 17
    • 28

    Decreasing Clouds

    • 21
    • 32

    Partly Sunny

    • 26
    • 38

    Partly Sunny

    • 30
    • 51

    Mostly Cloudy

    • 38
    • 55

    Rain Showers Likely

    • 29
    • 48

    Partly Sunny

Today 13 Dec Eastern Loudoun

Mostly cloudy. Highs in the mid 40s. West Winds around 5 Mph.

Tonight 13 Dec Eastern Loudoun

Cloudy. A chance of rain in the Evening, then snow and rain after midnight. Total snow accumulation of 1 to 3 Inches. Lows in the mid 20s. North Winds 5 to 10 Mph. Gusts up to 25 Mph after midnight. Chance of precipitation 90 percent.

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Chantilly Temperature Statistics

December Temperature

Washington/Dulles International Airport, DC (2.5 miles)

  • Lowest 9 December, 2025

    14 °F

  • Average December

    33 °F

  • Highest 10 December, 2025

    45 °F

Climate (2020–Present)

Washington/Dulles International Airport, DC (2.5 miles)

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  • Average Low 2020–2025

    47.7 °F

  • Average 2020–2025

    58.2 °F

  • Average High 2020–2025

    68.4 °F
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