Chantilly Weather Forecast

    • 52
    • 81

    Rain Showers Likely

    • 44
    • 66

    Rain Showers Likely

    • 50
    • 67

    Mostly Sunny

    • 52
    • 72

    Rain Showers

    • 50
    • 69

    Chance Rain Showers

    • 54
    • 73

    Slight Chance Thunderstorms

Today 10 May Eastern Loudoun

Mostly sunny. A chance of Showers and Thunderstorms in the afternoon. Highs around 80. Southwest Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 10 May Eastern Loudoun

Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then Showers likely after midnight. Lows in the lower 50s. Northwest Winds 5 to 10 Mph. Chance of rain 70 percent.

Graph Plots Open in Graphs

  • 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

    59.1 °F

  • Highest 5 May, 2026

    85.6 °F

Climate (2021–Present)

Washington/Dulles International Airport, DC (2.5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    68.6 °F
Get WillyWeather+ to remove ads