Chantilly Weather Forecast

    • 39
    • 59

    Sunny

    • 41
    • 62

    Partly Sunny

    • 41
    • 62

    Partly Sunny

    • 44
    • 61

    Mostly Sunny

    • 38
    • 61

    Mostly Sunny

    • 46
    • 64

    Slight Chance Rain Showers

    • 37
    • 59

    Mostly Sunny

Today 31 Oct Eastern Loudoun

Sunny, breezy with Highs in the upper 50s. West Winds 20 to 25 Mph with Gusts up to 40 Mph.

Tonight 31 Oct Eastern Loudoun

Clear. Lows around 40. West Winds 15 to 20 Mph with Gusts up to 40 Mph, Diminishing to 5 to 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chantilly Temperature Statistics

October Temperature

Washington/Dulles International Airport, DC (2.5 miles)

  • Lowest 25 October, 2025

    30 °F

  • Average October

    57.7 °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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