Manassas Weather Forecast

    • 24
    • 36

    Increasing Clouds

    • 25
    • 42

    Slight Chance Snow

    • 19
    • 35

    Slight Chance Snow

    • 26
    • 42

    Mostly Cloudy

    • 22
    • 42

    Partly Sunny

    • 27
    • 41

    Mostly Cloudy

Today 30 Dec Northwest Prince William

Sunny, Brisk, cooler with Highs in the mid 30s. Northwest Winds 15 to 25 Mph with Gusts up to 35 Mph.

Tonight 30 Dec Northwest Prince William

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 20s. West Winds 5 to 10 Mph. Gusts up to 25 Mph in the evening.

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Manassas Temperature Statistics

December Temperature

Manassas, Manassas Regional Airport/Harry P. Davis Field (3.1 miles)

  • Lowest 16 December, 2025

    12.9 °F

  • Average December

    35.1 °F

  • Highest 19 December, 2025

    61 °F

Climate (2020–Present)

Manassas, Manassas Regional Airport/Harry P. Davis Field (3.1 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    57 °F

  • Average High 2020–2025

    68 °F
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