Lake Thoreau Weather Forecast

    • 68
    • 82

    Rain Showers

    • 67
    • 86

    Partly Sunny

    • 56
    • 79

    Partly Sunny

    • 60
    • 77

    Mostly Sunny

    • 63
    • 82

    Partly Sunny

    • 65
    • 87

    Chance Rain Showers

Today 12 Sep Eastern Loudoun

Mostly cloudy. A chance of Showers and Thunderstorms in the afternoon. Highs in the lower 80s. Southeast Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 12 Sep Eastern Loudoun

Showers with a chance of Thunderstorms. Patchy fog. Lows in the upper 60s. South Winds around 5 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Thoreau Temperature Statistics

September Temperature

Washington/Dulles International Airport, DC (5.6 miles)

  • Lowest 8 September, 2026

    57.7 °F

  • Average September

    77.6 °F

  • Highest 1 September, 2026

    94.6 °F

Climate (2021–2026)

Washington/Dulles International Airport, DC (5.6 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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