Greenwich Weather Forecast

    • 59
    • 82

    Increasing Clouds

    • 57
    • 71

    Rain Showers Likely

    • 60
    • 69

    Rain Showers Likely

    • 59
    • 81

    Mostly Sunny

    • 59
    • 87

    Mostly Sunny

    • 58
    • 81

    Slight Chance Thunderstorms

Today 15 Sep Southern Fauquier

Partly sunny. Highs in the lower 80s. Northeast Winds 5 to 10 Mph.

Tonight 15 Sep Southern Fauquier

Partly cloudy. Lows in the upper 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Greenwich Temperature Statistics

September Temperature

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

  • Lowest 8 September, 2025

    44.1 °F

  • Average September

    67.4 °F

  • Highest 6 September, 2025

    91 °F

Climate (2020–Present)

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