Chantilly Weather Forecast

    • 38
    • 52

    Chance Rain

    • 34
    • 52

    Slight Chance Rain

    • 33
    • 53

    Rain Likely

    • 34
    • 39

    Rain

    • 40
    • 49

    Chance Rain

    • 25
    • 57

    Chance Rain

Today 23 Dec Eastern Loudoun

Cloudy with rain likely this Morning, then partly sunny this afternoon. Highs in the lower 50s. South Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 23 Dec Eastern Loudoun

Mostly clear. Lows in the upper 30s. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chantilly Temperature Statistics

December Temperature

Washington/Dulles International Airport, DC (2.5 miles)

  • Lowest 9 December, 2025

    14 °F

  • Average December

    33.2 °F

  • Highest 19 December, 2025

    59 °F

Climate (2020–Present)

Washington/Dulles International Airport, DC (2.5 miles)

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  • Average Low 2020–2025

    47.6 °F

  • Average 2020–2025

    58.2 °F

  • Average High 2020–2025

    68.4 °F
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