Holmes Run Stream Valley Park Weather Forecast

    • 65
    • 83

    Rain Showers

    • 61
    • 74

    Rain Showers

    • 56
    • 66

    Rain Showers

    • 56
    • 64

    Chance Rain Showers

    • 53
    • 64

    Chance Rain Showers

    • 53
    • 65

    Slight Chance Rain Showers

Today 20 Sep Arlington/Falls Church/Alexandria

Mostly cloudy. Scattered Showers late this Morning, then numerous Showers with a chance of Thunderstorms this afternoon. Highs in the mid 80s. Southwest Winds around 10 Mph. Chance of rain 60 percent.

Tonight 20 Sep Arlington/Falls Church/Alexandria

Mostly cloudy. Numerous Showers with a chance of Thunderstorms in the Evening, then a slight chance of Showers and Thunderstorms after midnight. Lows in the mid 60s. West Winds around 5 Mph, becoming north after midnight. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Holmes Run Stream Valley Park Temperature Statistics

September Temperature

Washington/Reagan National Airport, DC (5.6 miles)

  • Lowest 15 September, 2026

    58.6 °F

  • Average September

    78.5 °F

  • Highest 1 September, 2026

    98.7 °F

Climate (2021–2026)

Washington/Reagan National Airport, DC (5.6 miles)

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  • Average Low 2021–2026

    52.4 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    69.3 °F
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