Donaldson Run Park Weather Forecast

    • 36
    • 46

    Becoming Sunny

    • 25
    • 49

    Mostly Sunny

    • 32
    • 42

    Chance Rain/Snow

    • 38
    • 52

    Mostly Cloudy

    • 36
    • 49

    Slight Chance Rain

    • 46
    • 53

    Mostly Cloudy

    • 41
    • 62

    Partly Sunny

Today 20 Dec Arlington/Falls Church/Alexandria

Sunny. Highs in the mid 40s. South Winds 5 to 10 Mph.

Tonight 20 Dec Arlington/Falls Church/Alexandria

Mostly clear. Lows in the mid 30s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Real-Time

Donaldson Run Park Temperature Statistics

December Temperature

Washington/Reagan National Airport, DC (6.2 miles)

  • Lowest 15 December, 2025

    18 °F

  • Average December

    34.8 °F

  • Highest 18 December, 2025

    57 °F

Climate (2020–Present)

Washington/Reagan National Airport, DC (6.2 miles)

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  • Average Low 2020–2025

    52.5 °F

  • Average 2020–2025

    60.4 °F

  • Average High 2020–2025

    69.1 °F
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