Brentsville Weather Forecast

    • 59
    • 84

    Mostly Sunny

    • 61
    • 89

    Mostly Sunny

    • 61
    • 81

    Partly Sunny

    • 60
    • 79

    Mostly Cloudy

    • 60
    • 82

    Partly Sunny

    • 62
    • 83

    Partly Sunny

Today 18 Sep Southern Fauquier

Patchy fog in the morning. Mostly sunny. Highs in the mid 80s. North Winds around 5 Mph.

Tonight 18 Sep Southern Fauquier

Mostly clear. Lows in the upper 50s. Light and variable Winds, becoming west around 5 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Brentsville Temperature Statistics

September Temperature

Manassas, Manassas Regional Airport/Harry P. Davis Field (1.9 miles)

  • Lowest 8 September, 2025

    44.1 °F

  • Average September

    67.9 °F

  • Highest 6 September, 2025

    91 °F

Climate (2020–Present)

Manassas, Manassas Regional Airport/Harry P. Davis Field (1.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    46.1 °F

  • Average 2020–2025

    57 °F

  • Average High 2020–2025

    68 °F
Get WillyWeather+ to remove ads