Lake Manassas Weather Forecast

    • 64
    • 85

    Mostly Sunny

    • 67
    • 87

    Partly Sunny

    • 71
    • 92

    Mostly Sunny

    • 75
    • 97

    Hot

    • 73
    • 95

    Chance Thunderstorms

    • 72
    • 92

    Rain Showers Likely

Today 22 Jul Southern Fauquier

Sunny. Highs in the mid 80s. Northeast Winds around 5 Mph.

Tonight 22 Jul Southern Fauquier

Mostly clear. Lows in the mid 60s. Northeast Winds around 5 Mph in the Evening, becoming light and variable.

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Lake Manassas Temperature Statistics

July Temperature

Manassas, Manassas Regional Airport/Harry P. Davis Field (7.5 miles)

  • Lowest 5 July, 2025

    62.1 °F

  • Average July

    79.4 °F

  • Highest 8 July, 2025

    95 °F

Climate (2020–Present)

Manassas, Manassas Regional Airport/Harry P. Davis Field (7.5 miles)

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  • Average Low 2020–2025

    46.2 °F

  • Average 2020–2025

    57.1 °F

  • Average High 2020–2025

    68 °F
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