Bull Run Weather Forecast

    • 59
    • 84

    Slight Chance Thunderstorms

    • 58
    • 84

    Mostly Sunny

    • 61
    • 85

    Mostly Sunny

    • 66
    • 87

    Partly Sunny

    • 67
    • 87

    Rain Showers Likely

    • 67
    • 88

    Chance Rain Showers

Today 23 Aug Northwest Prince William

Sunny. A slight chance of Showers and Thunderstorms this afternoon. Highs in the lower 80s. Northwest Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

Tonight 23 Aug Northwest Prince William

Mostly clear. Lows in the upper 50s. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Bull Run Temperature Statistics

August Temperature

Manassas, Manassas Regional Airport/Harry P. Davis Field (4.3 miles)

  • Lowest 1 August, 2026

    63 °F

  • Average August

    78.2 °F

  • Highest 6 August, 2026

    93 °F

Climate (2021–2026)

Manassas, Manassas Regional Airport/Harry P. Davis Field (4.3 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    57.1 °F

  • Average High 2021–2026

    68.1 °F
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