Lahey Lost Valley Park Weather Forecast

    • 39
    • 66

    Mostly Sunny

    • 47
    • 69

    Mostly Sunny

    • 45
    • 69

    Mostly Sunny

    • 48
    • 65

    Mostly Cloudy

    • 49
    • 70

    Mostly Sunny

    • 50
    • 74

    Mostly Sunny

Today 25 Oct Central and Southeast Montgomery

Areas of frost with patchy fog in the morning. Sunny. Highs in the mid 60s. Light and variable Winds.

Tonight 25 Oct Central and Southeast Montgomery

Clear. Patchy fog. Lows in the upper 30s. Light and variable Winds.

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Lahey Lost Valley Park Temperature Statistics

October Temperature

Washington/Dulles International Airport, DC (8.7 miles)

  • Lowest 19 October, 2026

    36.6 °F

  • Average October

    62.6 °F

  • Highest 2 October, 2026

    89.7 °F

Climate (2021–2026)

Washington/Dulles International Airport, DC (8.7 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    68.6 °F
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