National Arboretum Weather Forecast

    • 66
    • 90

    Slight Chance Thunderstorms

    • 68
    • 86

    Partly Sunny

    • 72
    • 91

    Mostly Sunny

    • 76
    • 93

    Partly Sunny

    • 77
    • 96

    Slight Chance Thunderstorms

    • 77
    • 96

    Chance Rain Showers

    • 74
    • 94

    Chance Rain Showers

Today 28 Aug District of Columbia

Partly sunny with a slight chance of Showers and Thunderstorms. Highs in the upper 80s. North Winds around 5 Mph. Chance of rain 20 percent.

Tonight 28 Aug District of Columbia

Partly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Lows in the mid 60s. North Winds around 5 Mph. Chance of rain 20 percent.

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National Arboretum Temperature Statistics

August Temperature

College Park Airport (5 miles)

  • Lowest 25 August, 2026

    57.4 °F

  • Average August

    78.1 °F

  • Highest 6 August, 2026

    94.1 °F

Climate (2021–2026)

College Park Airport (5 miles)

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  • Average Low 2021–2026

    48 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    67.4 °F
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