Chantilly Weather Forecast

    • 46
    • 66

    Chance Rain Showers

    • 52
    • 70

    Partly Sunny

    • 53
    • 73

    Chance Rain Showers

    • 57
    • 81

    Rain Showers Likely

    • 46
    • 69

    Mostly Sunny

    • 52
    • 69

    Chance Rain Showers

Today 7 May Eastern Loudoun

Cloudy in the Morning, then becoming mostly sunny. A 20 percent chance of Showers. Highs in the mid 60s. Northwest Winds 5 to 10 Mph.

Tonight 7 May Eastern Loudoun

Mostly cloudy in the Evening, then clearing. Lows in the mid 40s. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chantilly Temperature Statistics

May Temperature

Washington/Dulles International Airport, DC (2.5 miles)

  • Lowest 1 May, 2026

    38.6 °F

  • Average May

    55.3 °F

  • Highest 4 May, 2026

    78.1 °F

Climate (2021–Present)

Washington/Dulles International Airport, DC (2.5 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    68.5 °F
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