Chantilly Weather Forecast

    • 28
    • 46

    Mostly Sunny

    • 38
    • 49

    Partly Sunny

    • 35
    • 52

    Rain Likely

    • 21
    • 39

    Chance Rain/Snow

    • 23
    • 34

    Partly Sunny

    • 24
    • 42

    Mostly Cloudy

Today 12 Jan Eastern Loudoun

Mostly sunny. Highs in the mid 40s. Southwest Winds 5 to 10 Mph.

Tonight 12 Jan Eastern Loudoun

Mostly clear. Lows in the upper 20s. Southwest Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Real-Time

Chantilly Temperature Statistics

January Temperature

Washington/Dulles International Airport, DC (2.5 miles)

  • Lowest 1 January, 2026

    23 °F

  • Average January

    37.9 °F

  • Highest 7 January, 2026

    61 °F

Climate (2021–Present)

Washington/Dulles International Airport, DC (2.5 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    68.4 °F
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