Chantilly Highlands Weather Forecast

    • 47
    • 65

    Decreasing Clouds

    • 53
    • 71

    Mostly Sunny

    • 55
    • 73

    Mostly Sunny

    • 55
    • 71

    Partly Sunny

    • 55
    • 71

    Partly Sunny

    • 55
    • 74

    Mostly Sunny

Today 24 Sep Eastern Loudoun

Partly sunny. Highs in the mid 60s. Northeast Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 24 Sep Eastern Loudoun

Partly cloudy. Lows in the mid 40s. North Winds 5 to 10 Mph.

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Chantilly Highlands Temperature Statistics

September Temperature

Washington/Dulles International Airport, DC (1.9 miles)

  • Lowest 15 September, 2026

    52.6 °F

  • Average September

    75.3 °F

  • Highest 1 September, 2026

    94.6 °F

Climate (2021–2026)

Washington/Dulles International Airport, DC (1.9 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    68.6 °F
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