Izaak Walton Park Weather Forecast

    • 34
    • 46

    Mostly Sunny

    • 22
    • 52

    Mostly Sunny

    • 32
    • 43

    Chance Rain/Snow

    • 38
    • 55

    Mostly Cloudy

    • 35
    • 50

    Chance Rain

    • 45
    • 54

    Slight Chance Rain

    • 41
    • 63

    Mostly Cloudy

Today 20 Dec Eastern Loudoun

Sunny. Highs in the mid 40s. South Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 20 Dec Eastern Loudoun

Mostly clear. Lows in the mid 30s. Southwest Winds 5 to 10 Mph with Gusts up to 25 Mph.

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Izaak Walton Park Temperature Statistics

December Temperature

Washington/Dulles International Airport, DC (7.5 miles)

  • Lowest 9 December, 2025

    14 °F

  • Average December

    32.1 °F

  • Highest 18 December, 2025

    54 °F

Climate (2020–Present)

Washington/Dulles International Airport, DC (7.5 miles)

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  • Average Low 2020–2025

    47.6 °F

  • Average 2020–2025

    58.2 °F

  • Average High 2020–2025

    68.4 °F
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