Gainesville Weather Forecast

    • 71
    • 81

    Rain Showers

    • 68
    • 89

    Partly Sunny

    • 65
    • 86

    Mostly Sunny

    • 68
    • 89

    Chance Rain Showers

    • 65
    • 86

    Chance Thunderstorms

    • 63
    • 79

    Chance Rain Showers

    • 64
    • 82

    Chance Rain Showers

Today 16 Aug Northwest Prince William

Mostly cloudy with scattered Showers with a chance of Thunderstorms. Highs in the lower 80s. South Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 16 Aug Northwest Prince William

Scattered Thunderstorms. Widespread Showers early this Evening, then numerous Showers after midnight. Some Thunderstorms may be severe with damaging Winds, small Hail, heavy Rainfall, and Tornadoes. Lows in the lower 70s. Southwest Winds around 5 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

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Gainesville Temperature Statistics

August Temperature

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

  • Lowest 1 August, 2026

    63 °F

  • Average August

    78.7 °F

  • Highest 6 August, 2026

    93 °F

Climate (2021–2026)

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