Sugarland Run Stream Valley Park Weather Forecast

    • 62
    • 80

    Partly Sunny

    • 63
    • 83

    Partly Sunny

    • 61
    • 86

    Chance Rain Showers

    • 58
    • 71

    Rain Showers Likely

    • 55
    • 66

    Chance Rain Showers

    • 46
    • 67

    Mostly Sunny

Today 30 Sep Eastern Loudoun

Patchy fog in the morning. Mostly sunny. Highs in the lower 80s. Southwest Winds around 5 Mph.

Tonight 30 Sep Eastern Loudoun

Mostly cloudy. Lows in the lower 60s. South Winds around 5 Mph.

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Sugarland Run Stream Valley Park Temperature Statistics

September Temperature

Washington/Dulles International Airport, DC (5.6 miles)

  • Lowest 24 September, 2026

    50.6 °F

  • Average September

    72.3 °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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