Mount Vernon District Park Weather Forecast

    • 65
    • 85

    Mostly Cloudy

    • 67
    • 79

    Windy

    • 68
    • 83

    Rain Showers Likely

    • 64
    • 78

    Rain Showers Likely

    • 60
    • 70

    Rain Showers Likely

    • 59
    • 64

    Chance Rain Showers

Today 18 Sep Fairfax

Partly sunny. Highs in the mid 80s. North Winds 5 to 10 Mph.

Tonight 18 Sep Fairfax

Mostly cloudy. Lows in the lower 60s. North Winds 5 to 10 Mph.

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Mount Vernon District Park Temperature Statistics

September Temperature

Washington/Reagan National Airport, DC (5.6 miles)

  • Lowest 15 September, 2026

    59 °F

  • Average September

    78.9 °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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