Chantilly Weather Forecast

    • 44
    • 72

    Sunny

    • 38
    • 63

    Sunny

    • 42
    • 64

    Mostly Sunny

    • 52
    • 69

    Partly Sunny

    • 50
    • 74

    Rain Showers Likely

    • 46
    • 65

    Slight Chance Rain Showers

    • 48
    • 68

    Mostly Sunny

Today 15 Oct Eastern Loudoun

Sunny. Highs in the lower 70s. North Winds 10 to 15 Mph.

Tonight 15 Oct Eastern Loudoun

Clear. Lows in the lower 40s. North Winds 5 to 10 Mph.

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  • Temperature Real-Time

Chantilly Temperature Statistics

October Temperature

Washington/Dulles International Airport, DC (2.5 miles)

  • Lowest 10 October, 2025

    39.9 °F
  • Average October

    62 °F
  • Highest 6 October, 2025

    82.9 °F

Climate (2020–Present)

Washington/Dulles International Airport, DC (2.5 miles)

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  • Average Low 2020–2025

    47.8 °F
  • Average 2020–2025

    58.3 °F
  • Average High 2020–2025

    68.6 °F
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