Lahey Lost Valley Park Weather Forecast

    • 66
    • 89

    Mostly Sunny

    • 66
    • 86

    Mostly Sunny

    • 67
    • 88

    Mostly Sunny

    • 72
    • 90

    Partly Sunny

    • 73
    • 91

    Chance Thunderstorms

    • 71
    • 90

    Chance Thunderstorms

    • 71
    • 89

    Chance Thunderstorms

Today 3 Jul Central and Southeast Montgomery

Mostly sunny. Highs in the upper 80s. West Winds around 5 Mph.

Tonight 3 Jul Central and Southeast Montgomery

Mostly clear. Lows in the mid 60s. Northwest Winds 5 to 10 Mph.

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Lahey Lost Valley Park Temperature Statistics

July Temperature

Washington/Dulles International Airport, DC (8.7 miles)

  • Lowest 1 July, 2025

    71.1 °F

  • Average July

    79.2 °F

  • Highest 1 July, 2025

    90 °F

Climate (2020–Present)

Washington/Dulles International Airport, DC (8.7 miles)

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  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    68.5 °F
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